PMC4093646_01
Preoperative
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F1
An infected sinus was present in relation to 21 with pus discharge (Fig. 1).
Preoperative diagnostic X-ray
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F2
Maxillary occlusal view revealed incomplete root formation with 21 and an oval shaped periapical radioluscency about 3 x 2.5 cm with clear-cut borders involving the periapical area and apical one-third of roots of 21 and 22 (Fig. 2).
Bone defect
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F3
Complete loss of buccal cortical plate was observed with 21 (Fig. 3).
Defect with bone graft
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F4
Slight bleeding was induced from the bony cavity and PerioGlas  (Nova bone) ceramic crystals were directly compacted into the bony defect (Fig. 4).
Postoperative X-ray
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F5
Immediate postoperative radiograph revealed satisfactory bone fill in the defect area (Fig. 5).
Three months postoperative X-ray
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F6
Radiograph taken in the 3rd month showed a diffuse radiopaque area and increased calcification surrounding the graft (Fig. 6).
Six months postoperative X-ray
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F7
Radiopacity with foci of pattern progressing from ground glass to spiculed appearance was observed indicating healing calcifying defect at the end of 6 months (Fig. 7). 11 and 23 were tested for vitality using thermal and electric test and both the teeth tested vital during succeeding visits.