Chaves GA, Grageda NE, Uribe QE

Language: Spanish
References: 20
Page: 148-153
PDF size: 423.33 Kb.

ABSTRACT

A large number of adult patients who need orthodontic treatment have dental absences or periodontal disease sequelae which often compromise the required anchorage. The use of mini implants greatly facilitates orthodontic biomechanics however the amount of necessary inter-radicular bone for their placement in patients with a mutilated dentition has not yet been assessed. Aim: To provide the clinician an anatomic guide that will help to locate the safer areas with more quantity of bone for inter-radicular mini-implant placement in the maxillary buccal cortical of patients with mutilated dentition. Methodology: The mean and standard deviation of the values at the intersection of the sagittal plane at 2, 5, 8 and 11 mm from the alveolar crest with the transverse plane at 2, 5 and 8 mm from the buccal cortical in images obtained from 50 maxillary cone-beam computerized tomographies (CBCTs) of periodontally compromised patients were assessed. Results: Considering that for the insertion of a mini-implant at least 3 mm of inter-radicular bone is required, the possible safe placement areas are between the second premolar and the first molar at 2, 5, 8 and 11 mm from the alveolar crest, between premolars at 8 mm and between canine and lateral incisor at 8 and 11 mm from the alveolar crest. Conclusion: It is recommended as a possible safe area for mini implant placement in the posterior segment between second premolar and first molar and in the anterior region, between canine and lateral incisor.

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