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Quantitative research using computed tomographic scanning of beagle jaws for determination of safe zones for
Lixing Zhao1, Zhenrui Xu, Zhi Yang
1State Key Laboratory of Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, 14# Section 3 Renminnan Road, Chengdu, PR China.
Objectives:
The aim of this study was to provide an anatomical map for micro-screw placement in a safe location between the posterior dental roots of the beagle jaw.
Study Design:
Three dimensional (3D) reconstructed images of 12 adult male beagles and jaw ground sections of another 6 beagles were examined. We measured sagittal, vertical and horizontal parameters in the intraradicular and interradicular regions of posterior teeth.
Results:
The data showed that the safe zones were located in the intraradicular spaces of P2, P3, P4, M1, M2 and the interradicular spaces between P4 and M1, M1 and M2 in the mandible; in the maxilla, they were located in the intraradicular spaces of P3, P2, M1 and the interradicular space between P3 and M1.
Conclusions:
The present study provides a map of safe areas for the application of micro-screws in beagles.
