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Abstract
Introduction
There are few reports on tooth eruption through Bio-Oss grafts. To our knowledge, there are no reports on whether teeth can erupt normally through the grafts. The aim of this study was to examine the effect of Bio-Oss grafts on tooth eruption in a canine model.
Materials and Methods
In five 10-week-old dogs, the deciduous third mandibular molars in one jaw quadrant of each animal were extracted and the fresh extraction sockets were then filled with Bio-Oss particles (experimental side). No such treatments were performed on the contralateral side (control side). A clinical and radiological evaluation was carried out every other week to evaluate the eruption level of the permanent third mandibular premolars and compare the eruption levels between the two sides.
Results
At week 4 after the experiment, the permanent third premolars began to erupt on both sides. At week 12, the crown of the permanent third premolar emerged from the gingiva on both sides. At week 20, the permanent third premolars on both sides erupted enough to occlude the opposing teeth. No significant differences were found between the control and experimental sides in terms of the eruption speed of the permanent third molars.
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Fig. 1.
A. Clinical features before treatment. B. Clinical features after extraction of the primary 3rd molar. C. Clinical features after filling the extraction sockets with Bio-Oss particles. D. Clinical features after treatment.
Fig. 2.
Measurements of tooth eruption levels made on periapical radiograph. D: tooth eruption level
Fig. 3.
Periapical radiographs taken 4 weeks after treatment. A. Control side. B. Experimental side.
Fig. 4.
Periapical radiographs taken 8 weeks after treatment. A. Control side. B. Experimental side.
Fig. 5.
Periapical radiographs taken 12 weeks after treatment. A. Control side. B. Experimental side.
Fig. 6.
Periapical radiographs taken 16 weeks after treatment. A. Control side. B. Experimental side.
Fig. 7.
Periapical radiographs and clinical features taken 20 weeks after treatment. A, C. Control side. B, D. Experimental side.
Table 1.
Results from measurements describing tooth eruption levels during the time of eruption on the control and experimental sides
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