Is failure of condylar neck osteosynthesis predictable based on orthopantomography?

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• 作者：Rudolf Seemann MSc ; MD ; DMD ; MBA^a ; ^{rudolf.seemann@meduniwien.ac.at} ; G. Undt MD ; DMD ; PhD^a ; G. Lauer MD ; DMD ; PhD^a ; S. Holawe MD^b ; K. Schicho DSc ; MD ; PhD^a ; C. Czerny MD ; PhD^c ; G. Krennmair MD ; DMD ; PhD^b ; R. Ewers MD ; DMD ; PhD^d ; C. Klug MD ; DMD ; PhD^a ; C. Perisanidis MD ; DMD^a
• 刊名：Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology
• 出版年：2011
• 出版时间：March 2011
• 年：2011
• 卷：111
• 期：3
• 页码：362-371
• 全文大小：1474 K

文摘

Background

Osteosynthesis failure rates of 11.3 % with 1 miniplate, 6.7 % with 2 miniplates, and 4.4 % with a single Medartis condyle plate were reported in previous studies of our clinic. Current science is still focused on the osteosynthesis material. Besides clinical parameters, conventional radiographs are still the first choice to detect osteosynthesis failures. This study scrutinized several factors assessable in postoperative orthopantomographs which might elevate the risk of osteosynthesis failure.

Study design

A total of 136 patients (22 with osteosynthesis failure, 114 without) with 151 mandibular condyle fractures were included in this study. Eight parameters were assessed in postoperative orthopantomographs.

Results

The best predictor of osteosynthesis failure was a simplified concept of ramus height. In cases of reduced or normal ramus height, the odds of osteosynthesis failure was significantly (P = .000001) reduced to a 10th. Isolated fractures were significantly more error prone (P = .0009).

Conclusions

Postoperative orthopantomographs depict factors which increase the risk of osteosynthesis failure.