| Cortical integrity of the inferior alveolar canal as a predictor of paresthesia after third-molar extraction. | |
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MedLine Citation:
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PMID: 20194382 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Paresthesia is a well-known complication of extraction of mandibular third molars (MTMs). The authors evaluated the relationship between paresthesia after MTM extraction and the cortical integrity of the inferior alveolar canal (IAC) by using computed tomography (CT). METHODS: The authors designed a retrospective cohort study involving participants considered, on the basis of panoramic imaging, to be at high risk of experiencing injury of the inferior alveolar nerve who subsequently underwent CT imaging and extraction of the MTMs. The primary predictor variable was the contact relationship between the IAC and the MTM as viewed on a CT image, classified into three groups: group 1, no contact; group 2, contact between the MTM and the intact IAC cortex; group 3, contact between the MTM and the interrupted IAC cortex. The secondary predictor variable was the number of CT image slices showing the cortical interruption around the MTM. The outcome variable was the presence or absence of postoperative paresthesia after MTM extraction. RESULTS: The study sample comprised 179 participants who underwent MTM extraction (a total of 259 MTMs). Their mean age was 23.6 years, and 85 (47.5 percent) were male. The overall prevalence of paresthesia was 4.2 percent (11 of 259 teeth). The prevalence of paresthesia in group 3 (involving an interrupted IAC cortex) was 11.8 percent (10 of 85 cases), while for group 2 (involving an intact IAC cortex) and group 1 (involving no contact) it was 1.0 percent (1 of 98 cases) and 0.0 percent (no cases), respectively. The frequency of nerve damage increased with the number of CT image slices showing loss of cortical integrity (P=.043). CONCLUSIONS: The results of this study indicate that loss of IAC cortical integrity is associated with an increased risk of experiencing paresthesia after MTM extraction. |
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Authors:
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Wonse Park; Ji-Wook Choi; Jae-Young Kim; Bong-Chul Kim; Hyung Jun Kim; Sang-Hwy Lee |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of the American Dental Association (1939) Volume: 141 ISSN: 1943-4723 ISO Abbreviation: J Am Dent Assoc Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-02 Completed Date: 2010-06-10 Revised Date: 2010-07-02 |
Medline Journal Info:
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Nlm Unique ID: 7503060 Medline TA: J Am Dent Assoc Country: United States |
Other Details:
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Languages: eng Pagination: 271-8 Citation Subset: D; IM |
Affiliation:
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Department of Oral and Maxillofacial Surgery, College of Dentistry, Yonsei University, Seoul, Korea. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Alveolar Process / innervation, radiography* Cohort Studies Female Humans Male Mandible / innervation, radiography* Mandibular Nerve / injuries, radiography Middle Aged Molar, Third / surgery* Paresthesia / etiology* Postoperative Complications* Radiography, Panoramic Retrospective Studies Risk Factors Tomography, X-Ray Computed Tooth Crown / radiography Tooth Extraction* / adverse effects Tooth Root / radiography Young Adult |
| Comments/Corrections | |
Comment In:
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J Am Dent Assoc. 2010 Jul;141(7):828-9; author reply 829
[PMID:
20592397
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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