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Research Article | Open Access
Volume 14 2022 | None
EFFECT OF CONCENTRATED AND DILUTE NITRIC ACID ON TOOTH MORPHOLOGY - A FORENSIC STUDY
Revathy.E, V. Vishnu Priya, Abirami Arthanari, Gayathri.R, Kavitha.S, Reshma PK
Pages: 49-57
Abstract
BACKGROUND Teeth are the hardest substance present in the human body. Hence, it acts as a hint in determining the age and sex in forensic cases. Acid erosion is otherwise known as dental erosion in the case of teeth. It is the irreversible change in tooth structure due to chemical dissolution of acid. AIM To study the effect of concentrated and dilute nitric acid on tooth morphology. MATERIALS AND METHOD Extracted non-carious teeth ( n = 6 ) were used in the study. The teeth were placed in 69% concentrated nitric acid and partially diluted nitric acid separately. The samples were taken out at various intervals like 5 hours and 24 hours. The morphological changes were observed and the teeth were placed back in the container. RESULT Statistically significant decrease in buccal and palatal length, mesial, distal, buccal and palatal width was observed in the teeth placed in both concentrated and dilute nitric acid. The teeth turned yellow, became glossy and soft after 5 hours of immersion in the acid. By the end of 24 hours the teeth were completely dissolved. CONCLUSION Extreme morphological changes were observed when the teeth were placed in concentrated and dilute nitric acid. The major application of the present study is in forensic odontology.
Keywords
Novel method, Dental erosion, Forensic odontology, Nitric acid, Tooth morphology, Innovative technique.
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