Three-dimensional evaluation of interradicular spaces and cortical bone thickness for the placement and initial stability of microimplants in adults

In the alveoloar process, 1 mm or more cortical bone thickness can be expected in the posterior dentition area. Safe locations for microimplant placements with adequate interradicular space are between the second premolar and the first molar in the maxillary buccal alveolar bone, between the molars in the maxillary palatal alveolar bone, and interradicular spaces from the first premolar to the second molar in the mandibular buccal alveolar bone. The midpalatal area and the retromolar pad area are also excellent locations for microimplant placement. Because of limited interradicular spaces, the recommended diameter of a microimplant is 1.2 to 1.6 mm for placement in the alveolar bone, and the recommended length is 6-7 mm.