Biomaterial Database

Does computed tomography prevent inferior alveolar nerve injuries caused by lower third molar removal? 2012

Gemma Sanmartí-Garcia, and Eduard Valmaseda-Castellón, and Cosme Gay-Escoda

Department of Oral Surgery and Implantology, School of Dentistry, University of Barcelona, Barcelona, Spain.

OBJECTIVE To verify the utility of computed tomography (CT) in preventing inferior alveolar nerve (IAN) injury owing to lower third molar extraction in close relation to the IAN on orthopantomogram. METHODS A retrospective cohort study design of 150 lower third molar extractions was performed. Patients were divided in 2 groups: the CT group (n = 95) underwent panoramic radiography and mandibular CT and the control group (n = 55) underwent only panoramic radiography. RESULTS Six extractions (4%) in the control group and 15 (10%) in the CT group resulted in IAN impairment (P > .05). Logistic regression models did not show that undergoing CT decreased the risk of IAN injury from lower third molar extraction. CONCLUSIONS Patient age and positive radiographic signs (darkening of the root and narrowing of the inferior alveolar canal) were associated with more requests for CT scanning. CT does not seem to significantly decrease the risk of producing IAN injury.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008334	Mandible	The largest and strongest bone of the FACE constituting the lower jaw. It supports the lower teeth.	Mylohyoid Groove,Mylohyoid Ridge,Groove, Mylohyoid,Grooves, Mylohyoid,Mandibles,Mylohyoid Grooves,Mylohyoid Ridges,Ridge, Mylohyoid,Ridges, Mylohyoid
D008340	Mandibular Nerve	A branch of the trigeminal (5th cranial) nerve. The mandibular nerve carries motor fibers to the muscles of mastication and sensory fibers to the teeth and gingivae, the face in the region of the mandible, and parts of the dura.	Alveolar Nerve, Inferior,Auriculotemporal Nerve,Buccal Nerve,Deep Temporal Nerve,Lateral Pterygoid Nerve,Masseteric Nerve,Mental Nerve,Mylohyoid Nerve,Auriculotemporal Nerves,Buccal Nerves,Deep Temporal Nerves,Inferior Alveolar Nerve,Inferior Alveolar Nerves,Lateral Pterygoid Nerves,Mandibular Nerves,Masseteric Nerves,Mental Nerves,Mylohyoid Nerves,Nerve, Auriculotemporal,Nerve, Buccal,Nerve, Deep Temporal,Nerve, Inferior Alveolar,Nerve, Lateral Pterygoid,Nerve, Mandibular,Nerve, Masseteric,Nerve, Mental,Nerve, Mylohyoid,Pterygoid Nerve, Lateral,Pterygoid Nerves, Lateral,Temporal Nerve, Deep,Temporal Nerves, Deep
D008964	Molar, Third	The aftermost permanent tooth on each side in the maxilla and mandible.	Tooth, Wisdom,Teeth, Wisdom,Molars, Third,Third Molar,Third Molars,Wisdom Teeth,Wisdom Tooth
D011862	Radiography, Panoramic	Extraoral body-section radiography depicting an entire maxilla, or both maxilla and mandible, on a single film.	Orthopantomography,Panoramic Radiography,Pantomography,Orthopantomographies,Panoramic Radiographies,Pantomographies,Radiographies, Panoramic
D005260	Female		Females
D005500	Follow-Up Studies	Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.	Followup Studies,Follow Up Studies,Follow-Up Study,Followup Study,Studies, Follow-Up,Studies, Followup,Study, Follow-Up,Study, Followup
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D000367	Age Factors	Age as a constituent element or influence contributing to the production of a result. It may be applicable to the cause or the effect of a circumstance. It is used with human or animal concepts but should be differentiated from AGING, a physiological process, and TIME FACTORS which refers only to the passage of time.	Age Reporting,Age Factor,Factor, Age,Factors, Age