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[Longitudinal changes in the dentition of the deciduous reversed bite using plaster casts]
Nihon Kyosei Shika Gakkai Zasshi = the Journal of Japan Orthodontic Society
|June 1, 1989
Summary
Some deciduous reversed bites self-correct due to smaller initial overjet and overbite. These cases show distinct initial morphological characteristics, unlike those requiring intervention.
Area of Science:
- Dentistry
- Orthodontics
- Pediatric Dentistry
Context:
- Deciduous reversed bite (anterior crossbite) is a common pediatric dental issue.
- Spontaneous correction occurs in some cases, but predictive factors are unclear.
- Understanding morphological differences is crucial for early intervention and treatment planning.
Purpose:
- To identify morphological characteristics differentiating self-corrected deciduous reversed bites from non-self-corrected ones.
- To analyze initial dental cast measurements and longitudinal changes.
- To determine if initial morphology or subsequent changes predict spontaneous resolution.
Summary:
- Self-corrected cases (n group) presented with smaller initial overjet and overbite, longer maxillary arch length, and wider incisive bone area compared to non-self-corrected cases (r group).
- The n group exhibited less canine interference, facilitating mandibular movement and anterior tooth wear.
- Longitudinal analysis revealed overbite reduction in both groups, but only the n group showed decreased overjet and mandibular advancement, linked to incisor attrition and molar eruption.
Impact:
- Identifies key initial diagnostic indicators for predicting spontaneous resolution of deciduous reversed bites.
- Provides insights into the dynamic occlusal changes influencing self-correction.
- Informs clinical decision-making regarding observation versus early orthodontic intervention for anterior crossbite.