Tooth wear patterns in subjects with class II division 1 and class II division 2 malocclusion.

Area of Science:

• Orthodontics
• Dental Morphology
• Oral Health

Background:

• Increasing prevalence of malocclusion necessitates understanding tooth wear patterns.
• Identifying causes of tooth wear aids orthodontic treatment planning.
• Specific wear patterns vary across different malocclusion types.

Purpose of the Study:

• To compare tooth wear patterns between Angle's class II division 1 and class II division 2 malocclusions.
• To investigate gender-specific differences in tooth wear.
• To correlate malocclusion type with specific tooth surface wear.

Main Methods:

• Comparative analysis of 100 orthodontic patients (15-25 years) with Angle's class II malocclusion.
• Categorization into class II division 1 (n=50) and class II division 2 (n=50) groups.
• Assessment of tooth wear using clinical examination, dental casts, photographs, radiographs, and a modified tooth wear index (TWI).

Main Results:

• Class II division 1 showed greater wear on maxillary canines, premolars, molars, and mandibular first molars.
• Class II division 2 exhibited increased wear on labial/incisal surfaces of incisors and palatal surfaces of maxillary molars.
• Gender-specific wear patterns were observed, with males showing higher occlusal wear in class II division 1.

Conclusions:

• Angle's class II division 1 and division 2 malocclusions present unique tooth wear patterns.
• Tooth wear patterns differ significantly between genders.
• Physiological tooth wear is influenced by the interocclusal arrangement in malocclusion.