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A descriptive tissue evaluation at maxillary interradicular sites: implications for orthodontic mini-implant
Won Hee Lim1, Soo Kyung Lee, Ulf Me Wikesjö
1Division of Orthodontics, Department of Dentistry, Ewha Womans University Mokdong Hospital, Seoul, Korea.
Clinical Anatomy (New York, N.Y.)
|June 23, 2007
Summary
This study offers guidelines for optimal mini-implant placement in orthodontics. Interradicular bone and soft tissue thickness were evaluated to determine ideal locations for orthodontic anchorage.
Area of Science:
- Dental Anatomy
- Orthodontics
- Biomaterials
Background:
- Interradicular anatomy is crucial for mini-implant placement in orthodontic anchorage.
- Limited data exists on interradicular hard and soft tissue thickness.
Purpose of the Study:
- To evaluate interradicular bone and soft tissue thickness.
- To provide guidelines for optimal mini-implant placement in orthodontics.
Main Methods:
- Cone-beam computed tomography (CBCT) scans of 30 adults (15 male, 15 female).
- Assessment of buccal interradicular cortical bone thickness and soft tissue depth.
- Measurement of attached gingival height using calipers.
Main Results:
- No significant differences in cortical bone thickness across most interradicular sites.
- Soft tissue thickness showed variations, notably between the lateral incisor/canine and 2nd premolar/1st molar sites.
- Attached gingival height was greatest anteriorly and shortest in the premolar region.
Conclusions:
- Mini-implants for orthodontic anchorage can be placed effectively within the attached gingiva up to 6 mm apical to the alveolar crest.
- Optimal placement considers bone-implant contact and adequate interradicular space.