Do posterior teeth supra-erupt when opposite resected segments have not been prosthetically restored?

Table 1. Mandibular Reconstruction Cases.

No. Name Age( yrs) M / F Diagnosis

1 S. L. 7 M

2 S. D. 10 M

Ameloblastic fibroodontoma

Ameloblastic fibroodontoma

Resection Site Location

Distal Tooth

Follow up( yrs)

RT mand 45 13

RT mand 43 13

3 S. S. 10 M Ossifying fibroma RT mand 45 7 4 C. E. 20 M Blast injury LT mand 33 11

5 Y. A. 20 F Ameloblastoma

RT mand + condyle

41 14

6 K. Y. 20 M Odontogenic keratocyst RT mand 45 7 7 C. Y. 22 F Ameloblastoma LT mand 33 3.5 8 A. G. 26 M Ameloblastic fibroma RT mand 43 12 9 SH. T. 30 F Giant cell tumor RT mand 41 10 10 G. E. 32 M Ameloblastoma LT mand 35 2.2 11 C. B. 33 F Ameloblastoma LT mand 33 13

12 D. S. 38 F Ameloblastoma

RT mand + condyle

42 5

13 R. A. 40 F Aneurismal bone cyst RT mand 44 10 14 V. E. 42 F Ameloblastoma LT mand 33 2.3

15 S. O. 59 F

Mucoepidermoid carcinoma

LT mand 35 4 16 R. Y. 61 M Giant cell tumor LT mand 31 7

1 B. A. 11 F

2 C. M. 14 F

Ameloblastic fibroodontoma

Ameloblastic fibroodontoma

RT max 13 9

LT max 23 10

3 K. Y. 16 M Sialoodontogenic cyst RT max 13 4 4 M. M. 16 F Odontogenic myxoma LT max 22 10

this study. The results of this study showed that not even slight SE had occurred in any patient. This is seen in examples of cases in Figs 1-5. The condition of the temporomandibular joints was not evaluated.

4. Discussion The results of this long term retrospective study were unexpected. Super eruption had not occurred apparently even slightly in any single patient regardless of the age of the patient, the location and extent of the surgical resection and the follow up period.

These results are in contrast with those obtained by Sarita et al. 11 However, in their study tooth loss was gradual, whereas in our study loss of teeth occurred in a single surgical procedure. As a result, the tongue could immediately fill the intraoral space created. It is conjectured that the lateral aspect of the dorsum of the tongue came into contact with the occlusal surface of the posterior teeth and prevented their subsequent eruption. Stabilization of the mandible during swallowing that is normally affected by the occlusal intercuspal contact is affected by closure onto the interposed tongue.