Diagnosis And Management Of Dental Deep Bite
Definition, features, diagnosis and treatment of dental deep bite.
Answer. Dental deep bite is confied to the dentition where there is extrusion of anteriors and intrusion of molars. Dental deep bite is oftn seen in Angle’s class 2 division 2 malocclusion.
Features
- Extraoral Features
- Decrease in lower facial height
- Intraoral Features
- Increase in the overbite
- Decrease in the overjet
- Extruded maxillary anteriors
- Intruded maxillary posteriors
- Increased susceptibility to food impaction and resultant gingivitis in mandibular anterior region.
Diagnosis
Dental deep bite occurs when problem lies within the dentition. Extraoral and intraoral examinations of patients should be thoroughly done and history of oral habits is noted. Following are the diagnostic aids used:
- Clinical examinations.
- Orthodontic study models: To evaluate extent of severity of deep bite.
- Lateral cepahlograms: To evaluate height of ramus, interincisal angle and Frankfort mandibular plane angle.
- Here patient show decreased mandibular plane angle and decreased anterior facial height.
Extrusion
- Anterior bite plane is a modified Hawley’s appliance with a flat ledge of acrylic behind upper anteriors.
- Both removable and fied anterior bite planes are used.
- When patient bites, the mandibular incisors contact the bite plane thus distocclusion the posteriors which are free to erupt.
- Height of anterior bite plane should be such that it separates the posteriors by 1.5 to 2 mm.
Leave a Reply