The Evolution of Prehistoric Dental Practices
The study of ancient dental techniques reveals a sophisticated understanding of oral health long before modern dentistry. Archaeological evidence from the Indus Valley Civilization (3300–1300 BCE) demonstrates that early humans practiced rudimentary but effective dental hygiene. Excavations in Mehrgarh, Pakistan, uncovered drilled molar teeth dating back 9,000 years, suggesting that early dentists used bow drills—originally designed for bead-making—to clean decayed teeth. This challenges the long-held assumption that dental intervention was purely palliative until the Bronze Age. The precision of these early drills, with an average hole depth of 3.5 mm, indicates a deliberate and skilled approach to treating cavities, far surpassing the casual “wait-and-see” attitude often attributed to pre-modern societies.
A 2023 study published in *Nature Scientific Reports* analyzed 300 Neolithic skulls from Europe and found that 14% displayed evidence of dental work, primarily in the form of fillings made from beeswax. This statistic is staggering when considering that only 5% of contemporary populations in developing nations have access to basic dental care. The beeswax fillings, applied to cavities, were found to reduce pain and prevent further decay by 60% over a five-year period. These findings suggest that ancient dental techniques were not just rudimentary but potentially more effective in some cases than 18th-century European dentistry, which relied heavily on tooth extraction as a primary treatment.
The discrepancy between ancient dental competence and modern assumptions stems from a Eurocentric bias in historical dental research. Most academic focus has centered on Greek and Roman dental practices, ignoring the innovations of other civilizations. For instance, the Etruscans (8th–3rd century BCE) were pioneers in dental prosthetics, crafting gold wire and ivory bridges to replace missing teeth. These prosthetics, found in tombs across Tuscany, were functional for up to 15 years, a durability unmatched by metal dentures until the 19th century. This underscores the need for a global perspective in dental historiography, one that acknowledges the diversity of ancient dental knowledge.
Recent advancements in 3D dental scanning have allowed researchers to re-examine ancient skulls with unprecedented accuracy. A 2024 project at the University of Zurich analyzed 2,000-year-old Mayan dental modifications, revealing that 37% of the population had intentionally filed their teeth into geometric patterns not just for aesthetic purposes but also to prevent cavities by smoothing rough enamel surfaces. This practice, known as “dental ablation,” had a 40% lower incidence of severe decay compared to non-modified teeth in the same population. Such discoveries force a reevaluation of how ancient cultures approached oral health, blending functionality with ritual significance.
Mechanical Innovations in Ancient Dentistry
The bow drill, a tool often associated with early bead-making, was repurposed by ancient dentists for cavity cleaning with remarkable efficiency. Archaeological records from Egypt and Mesopotamia show that these drills operated at speeds of up to 150 revolutions per minute, a rate comparable to early 20th-century hand drills. The drill bits, typically made from flint or obsidian, were sharpened to a 30-degree angle, allowing for precise removal of decayed tissue without damaging surrounding healthy enamel. This mechanical sophistication suggests that ancient dentists understood the importance of controlled drilling, a concept that was lost and only rediscovered in the 19th century with the advent of the dental handpiece.
A lesser-known innovation is the use of “dental forks,” metallic instruments found in Roman sites that resemble modern dental explorers. These forks, made from bronze or iron, were used to probe cavities and remove food debris, reducing the risk of infection. A 2023 excavation in Pompeii uncovered 12 such forks in a single household, indicating that dental hygiene tools were as ubiquitous as combs or mirrors in elite Roman society. The forks’ design, with a curved tip and serrated edges, suggests an understanding of ergonomics that modern dental instruments only began to replicate in the late 19th century.
The Chinese Tang Dynasty (618–907 CE) introduced the first known dental mirrors, crafted from polished bronze. These mirrors, found in the tomb of a Tang-era physician, were used to reflect light into the oral cavity, allowing dentists to visualize cavities without invasive procedures. This innovation predates the European use of dental mirrors by nearly 1,000 years. The Tang mirrors were also used in conjunction with herbal antiseptics, such as *Artemisia annua*, which reduced postoperative infections by 50% in documented cases. This dual-purpose tool highlights the integrated approach ancient dentists took toward diagnosis and treatment.
Another mechanical marvel is the “dental pump,” a suction device used in ancient India to remove pus from abscessed teeth. Described in the *Sushruta Samhita* (6th century BCE), the pump consisted of a bamboo tube with a valve mechanism, allowing dentists to drain infections without rupturing the abscess. Modern dental suction systems, while more advanced, operate on the same principle of negative pressure. The *Sushruta Samhita* also documents the use of “dental bellows,” a primitive form of anesthesia delivery, where smoke from burnt *Datura stramonium* was inhaled to numb pain—a technique that aligns with contemporary nitrous oxide sedation in terms of efficacy.
Herbal and Chemical Antiseptics in Ancient Dental Care
Ancient dental practitioners relied heavily on herbal antiseptics, many of which have been validated by modern science. The Egyptians, for example, used a paste of *myrrh*, *honey*, and *salt* to treat gum disease, a concoction that has been shown to reduce bacterial load by 70% in vitro. A 2024 study in *PLOS ONE* replicated this paste and found that its application reduced gingival inflammation by 45% within two weeks. This contradicts the narrative that ancient medicine was purely empirical, as the Egyptians likely observed the antimicrobial properties of myrrh through trial and error over centuries.
In Mesoamerica, the Aztecs used *chili peppers* and *salt* to create a mouthwash that prevented tooth decay. Capsaicin, the active compound in chili peppers, has been proven to inhibit the growth of *Streptococcus mutans*, the primary bacterium responsible for cavities. A 2023 biochemical analysis of Aztec dental remedies found that their mouthwash had a minimum inhibitory concentration (MIC) of 0.5% capsaicin, effectively halting bacterial proliferation. This suggests that ancient dentists understood the link between spicy foods and oral health long before Western science recognized the role of spices in antimicrobial therapy.
The Chinese Song Dynasty (960–1279 CE) pioneered the use of *clove oil* and *cinnamon* as dental analgesics. Clove oil, derived from *Syzygium aromaticum*, contains eugenol, a compound that numbs pain receptors and has been shown to reduce postoperative dental pain by 60% in clinical trials. The Song Dynasty dentists mixed clove oil with *camphor* to create a topical anesthetic, a practice that persisted in traditional Chinese medicine until the 20th century. This herbal blend is still used in modern dentistry today, underscoring the longevity of ancient innovations.
A rarely discussed but highly effective antiseptic is *neem*, used in Ayurvedic dentistry. Neem twigs, chewed like toothbrushes, release *nimbidin*, a compound that inhibits plaque formation and reduces gingivitis by 55%. A 2024 meta-analysis of 15 studies on neem-based dental products found that its long-term use prevented 78% of cavities in test subjects. This statistic is particularly striking when compared to fluoride toothpaste, which has a cavity prevention rate of 35%. The efficacy of neem challenges the dominance of fluoride in modern dental care, suggesting that herbal alternatives may offer superior outcomes in certain contexts.
Case Study: The Mehrgarh Molar Drilling Procedure
The 9,000-year-old molar drilled in Mehrgarh, Pakistan, represents one of the earliest known dental interventions in human history. The individual, a 25-year-old male, exhibited a cavity in the mandibular first molar, filled with beeswax—a material that, when analyzed via gas chromatography, was found to contain trace amounts of *Propolis*, a natural antimicrobial. The drilling was performed using a flint-tipped bow drill, which created a conical hole 3.5 mm deep and 2 mm wide. The precision of the hole, measured via micro-CT scanning, suggests that the dentist used a stabilizing technique, likely involving a second person to hold the patient’s jaw steady. This collaborative approach indicates a rudimentary but effective form of patient management.
The intervention likely involved two stages: first, the removal of decayed tissue using the drill, and second, the application of beeswax mixed with propolis to seal the cavity. The beeswax acted as a temporary filling, preventing food debris from accumulating in the hole and reducing bacterial growth. A 2023 simulation of this procedure using modern dental materials found that the beeswax filling reduced secondary decay by 40% over a five-year period. This outcome suggests that ancient dentists had a sophisticated understanding of cavity sealing, a concept that was not reintroduced in Western dentistry until the 18th century with the use of gold foil fillings.
What makes this case study particularly intriguing is the patient’s survival rate. Given the lack of antibiotics in 7000 BCE, the risk of infection from such a procedure would have been high. However, the absence of periapical abscesses in the skull suggests that the intervention was successful. This implies that either the propolis in the beeswax acted as an antiseptic, or the patient’s immune system was robust enough to combat any post-procedural infections. The latter explanation aligns with anthropological evidence that Neolithic populations had stronger immune responses due to constant exposure to environmental pathogens.
This case study forces a reevaluation of ancient dental competence. The Mehrgarh molar drilling was not a desperate measure but a calculated, evidence-based intervention. The use of propolis-infused beeswax as a filling material demonstrates a keen understanding of antimicrobial properties, while the precision of the drilling indicates a level of skill comparable to early 20th-century dentists. This challenges the narrative that ancient dental practices were primitive or ineffective, instead highlighting a lost era of dental innovation that modern dentistry has only begun to rediscover.
Case Study: The Roman Dental Fork Extraction
A 2023 excavation in Herculaneum uncovered the remains of a 40-year-old male with a severely decayed mandibular molar, extracted using a bronze dental fork. The fork, found adjacent to the skull, had a curved tip with serrated edges, designed to hook under the tooth and apply controlled pressure for removal. The extraction site showed signs of healing, with new bone formation evident in CT scans, indicating that the procedure was performed with minimal trauma. The absence of post-extraction infections, despite the lack of antibiotics, suggests that the Roman dentist used a herbal antiseptic, likely *thyme oil*, which has been shown to reduce bacterial load by 65%.
The methodology of the extraction involved two assistants: one to hold the patient’s head steady, and another to apply counterpressure to the jaw using a wooden block. This three-person technique ensured stability and precision, reducing the risk of fracturing the jawbone—a common complication in primitive extractions. The dental fork itself was likely heated to a temperature of 100°C prior to insertion, a practice documented in the *De Medicina* of Aulus Cornelius Celsus (1st century CE). Heat sterilization would have killed surface bacteria, further reducing the risk of infection.
The patient survived the procedure, as evidenced by the complete osseous healing at the extraction site. A 2024 histological analysis of the alveolar bone revealed minimal scarring, indicating a smooth and efficient extraction. This outcome is remarkable when compared to 18th-century European extractions, which had a mortality rate of 5–10% due to sepsis. The Roman technique, while not sterile by modern standards, was far more advanced than contemporaneous practices in other parts of the world. This suggests that Roman dentistry was not merely a crude precursor to modern techniques but a highly developed system in its own right.
This case study also highlights the social context of dental care in ancient Rome. The patient, likely a member of the elite class given the use of bronze tools, had access to a dentist who was skilled in both mechanical extraction and herbal antisepsis. The presence of the dental fork in a household context implies that dental tools were personal items, much like modern toothbrushes. This personalization of dental care contrasts with the impersonal, assembly-line approach of early modern dentistry, where extractions were often performed by barber-surgeons with minimal training.
Case Study: The Tang Dynasty Bronze Mirror Diagnosis
The tomb of a Tang Dynasty physician in Xi’an contained a polished bronze mirror, a dental tool used to reflect light into the oral cavity for cavity detection. The mirror, measuring 5 cm in diameter, was found alongside a set of bronze dental forks and a clay jar containing *Artemisia annua* residue. A skull buried with the physician showed signs of multiple cavities, indicating that the mirror was used for diagnostic purposes. Micro-CT scans of the skull revealed that the cavities were shallow and had been treated with a herbal paste, suggesting that the dentist identified decay early and applied a preventive measure before it progressed.
The methodology of the diagnosis involved positioning the mirror at a 45-degree angle to the oral cavity, allowing light to reflect off the mirror’s surface and illuminate the teeth. This technique, described in the *Xinxiu Bencao* (7th century CE), was the first known use of indirect lighting in dental diagnosis. The dentist would then use the bronze forks to probe the illuminated cavities, checking for softness or pain response—a primitive form of tactile diagnosis that predates the dental explorer by over 1,000 years. The *Artemisia annua* paste found in the jar was likely applied to the cavities to prevent further decay, as the herb contains *artemisinin*, a compound with antimicrobial properties.
The outcome of this intervention was quantified via dental wear analysis. The treated cavities showed no progression over a 10-year period, indicating that the herbal paste was effective in halting decay. This is particularly striking when compared to untreated cavities in the same population, which advanced to the pulp in 60% of cases. The use of *Artemisia annua* as a dental antiseptic suggests that Tang Dynasty dentists understood the link between herbal medicine and oral health, a concept that modern dentistry has only recently begun to explore through research into plant-based antimicrobials.
This case study also provides insight into the professionalization of dentistry in Tang China. The presence of a dedicated dental toolkit in the physician’s tomb indicates that dental care was a specialized field, separate from general medicine. The bronze mirror, in particular, signifies a technological advancement that allowed for non-invasive diagnosis—a hallmark of modern dental practice. This professionalization contrasts with the amateurish approaches of early European dentistry, where barbers and blacksmiths often performed extractions without training. The Tang Dynasty’s emphasis on specialized tools and herbal remedies suggests a holistic and sophisticated approach to dental care that has been largely overlooked in Western historical narratives.
The Evolution of Prehistoric Dental Practices
The study of ancient dental techniques reveals a sophisticated understanding of oral health long before modern dentistry. Archaeological evidence from the Indus Valley Civilization (3300–1300 BCE) demonstrates that early humans practiced rudimentary but effective dental hygiene. Excavations in Mehrgarh, Pakistan, uncovered drilled molar teeth dating back 9,000 years, suggesting that early dentists used bow drills—originally designed for bead-making—to clean decayed teeth. This challenges the long-held assumption that dental intervention was purely palliative until the Bronze Age. The precision of these early drills, with an average hole depth of 3.5 mm, indicates a deliberate and skilled approach to treating cavities, far surpassing the casual “wait-and-see” attitude often attributed to pre-modern societies.
A 2023 study published in *Nature Scientific Reports* analyzed 300 Neolithic skulls from Europe and found that 14% displayed evidence of dental work, primarily in the form of fillings made from beeswax. This statistic is staggering when considering that only 5% of contemporary populations in developing nations have access to basic dental care. The beeswax fillings, applied to cavities, were found to reduce pain and prevent further decay by 60% over a five-year period. These findings suggest that ancient dental techniques were not just rudimentary but potentially more effective in some cases than 18th-century European dentistry, which relied heavily on tooth extraction as a primary treatment.
The discrepancy between ancient dental competence and modern assumptions stems from a Eurocentric bias in historical dental research. Most academic focus has centered on Greek and Roman dental practices, ignoring the innovations of other civilizations. For instance, the Etruscans (8th–3rd century BCE) were pioneers in dental prosthetics, crafting gold wire and ivory bridges to replace missing teeth. These prosthetics, found in tombs across Tuscany, were functional for up to 15 years, a durability unmatched by metal dentures until the 19th century. This underscores the need for a global perspective in dental historiography, one that acknowledges the diversity of ancient dental knowledge.
Recent advancements in 3D dental scanning have allowed researchers to re-examine ancient skulls with unprecedented accuracy. A 2024 project at the University of Zurich analyzed 2,000-year-old Mayan dental modifications, revealing that 37% of the population had intentionally filed their teeth into geometric patterns not just for aesthetic purposes but also to prevent cavities by smoothing rough enamel surfaces. This practice, known as “dental ablation,” had a 40% lower incidence of severe decay compared to non-modified teeth in the same population. Such discoveries force a reevaluation of how ancient cultures approached oral health, blending functionality with ritual significance.
Mechanical Innovations in Ancient Dentistry
The bow drill, a tool often associated with early bead-making, was repurposed by ancient dentists for cavity cleaning with remarkable efficiency. Archaeological records from Egypt and Mesopotamia show that these drills operated at speeds of up to 150 revolutions per minute, a rate comparable to early 20th-century hand drills. The drill bits, typically made from flint or obsidian, were sharpened to a 30-degree angle, allowing for precise removal of decayed tissue without damaging surrounding healthy enamel. This mechanical sophistication suggests that ancient dentists understood the importance of controlled drilling, a concept that was lost and only rediscovered in the 19th century with the advent of the dental handpiece.
A lesser-known innovation is the use of “dental forks,” metallic instruments found in Roman sites that resemble modern dental explorers. These forks, made from bronze or iron, were used to probe cavities and remove food debris, reducing the risk of infection. A 2023 excavation in Pompeii uncovered 12 such forks in a single household, indicating that dental hygiene tools were as ubiquitous as combs or mirrors in elite Roman society. The forks’ design, with a curved tip and serrated edges, suggests an understanding of ergonomics that modern dental instruments only began to replicate in the late 19th century.
The Chinese Tang Dynasty (618–907 CE) introduced the first known dental mirrors, crafted from polished bronze. These mirrors, found in the tomb of a Tang-era physician, were used to reflect light into the oral cavity, allowing dentists to visualize cavities without invasive procedures. This innovation predates the European use of dental mirrors by nearly 1,000 years. The Tang mirrors were also used in conjunction with herbal antiseptics, such as *Artemisia annua*, which reduced postoperative infections by 50% in documented cases. This dual-purpose tool highlights the integrated approach ancient dentists took toward diagnosis and treatment.
Another mechanical marvel is the “dental pump,” a suction device used in ancient India to remove pus from abscessed teeth. Described in the *Sushruta Samhita* (6th century BCE), the pump consisted of a bamboo tube with a valve mechanism, allowing dentists to drain infections without rupturing the abscess. Modern dental suction systems, while more advanced, operate on the same principle of negative pressure. The *Sushruta Samhita* also documents the use of “dental bellows,” a primitive form of anesthesia delivery, where smoke from burnt *Datura stramonium* was inhaled to numb pain—a technique that aligns with contemporary nitrous oxide sedation in terms of efficacy.
Herbal and Chemical Antiseptics in Ancient Dental Care
Ancient dental practitioners relied heavily on herbal antiseptics, many of which have been validated by modern science. The Egyptians, for example, used a paste of *myrrh*, *honey*, and *salt* to treat gum disease, a concoction that has been shown to reduce bacterial load by 70% in vitro. A 2024 study in *PLOS ONE* replicated this paste and found that its application reduced gingival inflammation by 45% within two weeks. This contradicts the narrative that ancient medicine was purely empirical, as the Egyptians likely observed the antimicrobial properties of myrrh through trial and error over centuries.
In Mesoamerica, the Aztecs used *chili peppers* and *salt* to create a mouthwash that prevented tooth decay. Capsaicin, the active compound in chili peppers, has been proven to inhibit the growth of *Streptococcus mutans*, the primary bacterium responsible for cavities. A 2023 biochemical analysis of Aztec dental remedies found that their mouthwash had a minimum inhibitory concentration (MIC) of 0.5% capsaicin, effectively halting bacterial proliferation. This suggests that ancient dentists understood the link between spicy foods and oral health long before Western science recognized the role of spices in antimicrobial therapy.
The Chinese Song Dynasty (960–1279 CE) pioneered the use of *clove oil* and *cinnamon* as dental analgesics. Clove oil, derived from *Syzygium aromaticum*, contains eugenol, a compound that numbs pain receptors and has been shown to reduce postoperative dental pain by 60% in clinical trials. The Song Dynasty dentists mixed clove oil with *camphor* to create a topical anesthetic, a practice that persisted in traditional Chinese medicine until the 20th century. This herbal blend is still used in modern dentistry today, underscoring the longevity of ancient innovations.
A rarely discussed but highly effective antiseptic is *neem*, used in Ayurvedic dentistry. Neem twigs, chewed like toothbrushes, release *nimbidin*, a compound that inhibits plaque formation and reduces gingivitis by 55%. A 2024 meta-analysis of 15 studies on neem-based dental products found that its long-term use prevented 78% of cavities in test subjects. This statistic is particularly striking when compared to fluoride toothpaste, which has a cavity prevention rate of 35%. The efficacy of neem challenges the dominance of fluoride in modern 屯門牙科醫生 care, suggesting that herbal alternatives may offer superior outcomes in certain contexts.
Case Study: The Mehrgarh Molar Drilling Procedure
The 9,000-year-old molar drilled in Mehrgarh, Pakistan, represents one of the earliest known dental interventions in human history. The individual, a 25-year-old male, exhibited a cavity in the mandibular first molar, filled with beeswax—a material that, when analyzed via gas chromatography, was found to contain trace amounts of *Propolis*, a natural antimicrobial. The drilling was performed using a flint-tipped bow drill, which created a conical hole 3.5 mm deep and 2 mm wide. The precision of the hole, measured via micro-CT scanning, suggests that the dentist used a stabilizing technique, likely involving a second person to hold the patient’s jaw steady. This collaborative approach indicates a rudimentary but effective form of patient management.
The intervention likely involved two stages: first, the removal of decayed tissue using the drill, and second, the application of beeswax mixed with propolis to seal the cavity. The beeswax acted as a temporary filling, preventing food debris from accumulating in the hole and reducing bacterial growth. A 2023 simulation of this procedure using modern dental materials found that the beeswax filling reduced secondary decay by 40% over a five-year period. This outcome suggests that ancient dentists had a sophisticated understanding of cavity sealing, a concept that was not reintroduced in Western dentistry until the 18th century with the use of gold foil fillings.
What makes this case study particularly intriguing is the patient’s survival rate. Given the lack of antibiotics in 7000 BCE, the risk of infection from such a procedure would have been high. However, the absence of periapical abscesses in the skull suggests that the intervention was successful. This implies that either the propolis in the beeswax acted as an antiseptic, or the patient’s immune system was robust enough to combat any post-procedural infections. The latter explanation aligns with anthropological evidence that Neolithic populations had stronger immune responses due to constant exposure to environmental pathogens.
This case study forces a reevaluation of ancient dental competence. The Mehrgarh molar drilling was not a desperate measure but a calculated, evidence-based intervention. The use of propolis-infused beeswax as a filling material demonstrates a keen understanding of antimicrobial properties, while the precision of the drilling indicates a level of skill comparable to early 20th-century dentists. This challenges the narrative that ancient dental practices were primitive or ineffective, instead highlighting a lost era of dental innovation that modern dentistry has only begun to rediscover.
Case Study: The Roman Dental Fork Extraction
A 2023 excavation in Herculaneum uncovered the remains of a 40-year-old male with a severely decayed mandibular molar, extracted using a bronze dental fork. The fork, found adjacent to the skull, had a curved tip with serrated edges, designed to hook under the tooth and apply controlled pressure for removal. The extraction site showed signs of healing, with new bone formation evident in CT scans, indicating that the procedure was performed with minimal trauma. The absence of post-extraction infections, despite the lack of antibiotics, suggests that the Roman dentist used a herbal antiseptic, likely *thyme oil*, which has been shown to reduce bacterial load by 65%.
The methodology of the extraction involved two assistants: one to hold the patient’s head steady, and another to apply counterpressure to the jaw using a wooden block. This three-person technique ensured stability and precision, reducing the risk of fracturing the jawbone—a common complication in primitive extractions. The dental fork itself was likely heated to a temperature of 100°C prior to insertion, a practice documented in the *De Medicina* of Aulus Cornelius Celsus (1st century CE). Heat sterilization would have killed surface bacteria, further reducing the risk of infection.
The patient survived the procedure, as evidenced by the complete osseous healing at the extraction site. A 2024 histological analysis of the alveolar bone revealed minimal scarring, indicating a smooth and efficient extraction. This outcome is remarkable when compared to 18th-century European extractions, which had a mortality rate of 5–10% due to sepsis. The Roman technique, while not sterile by modern standards, was far more advanced than contemporaneous practices in other parts of the world. This suggests that Roman dentistry was not merely a crude precursor to modern techniques but a highly developed system in its own right.
This case study also highlights the social context of dental care in ancient Rome. The patient, likely a member of the elite class given the use of bronze tools, had access to a dentist who was skilled in both mechanical extraction and herbal antisepsis. The presence of the dental fork in a household context implies that dental tools were personal items, much like modern toothbrushes. This personalization of dental care contrasts with the impersonal, assembly-line approach of early modern dentistry, where extractions were often performed by barber-surgeons with minimal training.
Case Study: The Tang Dynasty Bronze Mirror Diagnosis
The tomb of a Tang Dynasty physician in Xi’an contained a polished bronze mirror, a dental tool used to reflect light into the oral cavity for cavity detection. The mirror, measuring 5 cm in diameter, was found alongside a set of bronze dental forks and a clay jar containing *Artemisia annua* residue. A skull buried with the physician showed signs of multiple cavities, indicating that the mirror was used for diagnostic purposes. Micro-CT scans of the skull revealed that the cavities were shallow and had been treated with a herbal paste, suggesting that the dentist identified decay early and applied a preventive measure before it progressed.
The methodology of the diagnosis involved positioning the mirror at a 45-degree angle to the oral cavity, allowing light to reflect off the mirror’s surface and illuminate the teeth. This technique, described in the *Xinxiu Bencao* (7th century CE), was the first known use of indirect lighting in dental diagnosis. The dentist would then use the bronze forks to probe the illuminated cavities, checking for softness or pain response—a primitive form of tactile diagnosis that predates the dental explorer by over 1,000 years. The *Artemisia annua* paste found in the jar was likely applied to the cavities to prevent further decay, as the herb contains *artemisinin*, a compound with antimicrobial properties.
The outcome of this intervention was quantified via dental wear analysis. The treated cavities showed no progression over a 10-year period, indicating that the herbal paste was effective in halting decay. This is particularly striking when compared to untreated cavities in the same population, which advanced to the pulp in 60% of cases. The use of *Artemisia annua* as a dental antiseptic suggests that Tang Dynasty dentists understood the link between herbal medicine and oral health, a concept that modern dentistry has only recently begun to explore through research into plant-based antimicrobials.
This case study also provides insight into the professionalization of dentistry in Tang China. The presence of a dedicated dental toolkit in the physician’s tomb indicates that dental care was a specialized field, separate from general medicine. The bronze mirror, in particular, signifies a technological advancement that allowed for non-invasive diagnosis—a hallmark of modern dental practice. This professionalization contrasts with the amateurish approaches of early European dentistry, where barbers and blacksmiths often performed extractions without training. The Tang Dynasty’s emphasis on specialized tools and herbal remedies suggests a holistic and sophisticated approach to dental care that has been largely overlooked in Western historical narratives.