Abstract：
:The aim of this study was to evaluate the diagnostic accuracies of cone beam computed tomography (CBCT) and panoramic techniques in predicting inferior alveolar nerve (IAN) exposure. The sample size was determined based on a pilot study. This prospective clinical series study included 59 third molar extraction sites with any of seven previously suggested panoramic signs of IAN exposure. The diagnosis of nerve exposure was done on panoramic and CBCT images. Molars were extracted and nerve exposure was evaluated clinically. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of CBCT method, and sensitivity and PPV of panoramic method were estimated). The panoramic and CBCT methods correctly classified 67.7% and 93.3%, respectively, of 60 cases. This difference was statistically significant (χ2=13.333, P=0.000). The sensitivity, specificity, PPV, and NPV for CBCT were 97.4%, 85.7%, 92.7%, and 94.7%, respectively. The sensitivity and PPV of panoramic radiography were 67.8% and 97.6%, respectively. The signs with the highest sensitivity were interruption of the mandibular canal border and abrupt canal narrowing. None of the Pell and Gregory criteria, molar angulations, or three-dimensional canal-apex relationships was significantly associated with clinically confirmed IAN exposure. Panoramic radiography may miss about one-third of exposure cases, but a positive panoramic diagnosis is most likely to be a real exposure and should be taken seriously.
journal_name
Int J Oral Maxillofac Surgjournal_title
International journal of oral and maxillofacial surgeryauthors
Hasani A,Ahmadi Moshtaghin F,Roohi P,Rakhshan Vdoi
10.1016/j.ijom.2016.10.003subject
Has Abstractpub_date
2017-02-01 00:00:00pages
230-235issue
2eissn
0901-5027issn
1399-0020pii
S0901-5027(16)30276-4journal_volume
46pub_type
杂志文章abstract：:In 20 adult cleft patients, the influence of a Le-Fort-I-osteotomy and ventral-caudal advancement of the maxilla on nasal breathing was studied. An increase of nasal air flow in the majority of patients is due to an increase in the volume of nasal skeleton and/or in the nasolabial angle and alar nasal base. Rhinomanom...
journal_title：International journal of oral and maxillofacial surgery
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journal_title：International journal of oral and maxillofacial surgery
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journal_title：International journal of oral and maxillofacial surgery
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journal_title：International journal of oral and maxillofacial surgery
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journal_title：International journal of oral and maxillofacial surgery
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journal_title：International journal of oral and maxillofacial surgery
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journal_title：International journal of oral and maxillofacial surgery
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journal_title：International journal of oral and maxillofacial surgery
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journal_title：International journal of oral and maxillofacial surgery
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journal_title：International journal of oral and maxillofacial surgery
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journal_title：International journal of oral and maxillofacial surgery
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