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 .