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Bimaxillary protrusion as a pathologic problem in the Thai
American Journal of Orthodontics
|March 1, 1980
Summary
Bimaxillary protrusion, characterized by a low interincisal angle, is common in dental students. This condition is linked to increased mouth breathing and tongue/lip habits, suggesting a complex etiology.
Area of Science:
- Dentistry
- Orthodontics
- Facial Growth
Background:
- Bimaxillary protrusion is a dental anomaly affecting facial aesthetics and function.
- Understanding its prevalence and contributing factors is crucial for effective orthodontic treatment planning.
Purpose of the Study:
- To investigate the nature and prevalence of bimaxillary protrusion among dental students.
- To analyze the relationship between bimaxillary protrusion and various etiological factors.
Main Methods:
- Cephalometric analysis (Steiner's analysis) of radiographs.
- Evaluation of dental models and photographs.
- Assessment of oral habits, including mouth breathing and tongue/lip posture.
Main Results:
- All subjects with bimaxillary protrusion exhibited an interincisal angle below 124 degrees.
- A higher incidence of mouth breathing and abnormal tongue/lip habits was observed in subjects with bimaxillary protrusion.
- Increased tongue volume was also noted in affected individuals.
Conclusions:
- Bimaxillary protrusion in this cohort is associated with specific cephalometric findings and adverse oral habits.
- The etiology of bimaxillary protrusion is multifactorial, involving genetic, environmental, and functional influences.
- Early identification and intervention are recommended for managing bimaxillary protrusion and associated habits.