Variation in Size and Form between Left and Right Maxillary Central Incisor Teeth

Area of Science:

• Dentistry
• Anthropology
• Forensic Odontology

Background:

• Maxillary central incisors exhibit variations in size between left and right sides.
• Understanding these variations is crucial for dental and forensic applications.
• Previous research has not fully elucidated sex-based differences in maxillary central incisor dimensions.

Purpose of the Study:

• To compare the size variation of left and right maxillary central incisors in male and female dental students.
• To determine significant differences in maxillary central incisor dimensions between males and females.
• To explore the clinical and forensic applicability of observed sex-based dental dimorphism.

Main Methods:

• A sample of 70 dental students (40 male, 30 female) underwent dental impressions using irreversible hydrocolloid.
• Mesiodistal crown width, cervical width, and tooth length of maxillary central incisors were measured using digital calipers.
• Measurements were recorded separately for left and right maxillary central incisors for each participant.

Main Results:

• The mean crown length of the maxillary left central incisor was greater than the right incisor in males.
• Mean crown length for both right and left maxillary central incisors was significantly greater in males compared to females.
• While not explicitly stated for width, the trend suggests larger overall dimensions in males.

Conclusions:

• Male individuals exhibit larger maxillary central incisor dimensions compared to females.
• These findings highlight significant sexual dimorphism in maxillary central incisor size.
• The study provides valuable data for forensic identification and dental treatment planning.