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目的:调查了解空军招飞学员第3磨牙萌出、阻生及龋病发生等情况。方法:选择空军招飞学员407例,通过问诊、口腔内视诊及全口曲面断层X线检查,观察记录所有受检者口腔内4个解剖区域第3磨牙正常萌出、阻生及龋病发生情况。结果:所有受检者均检查到至少1颗第3磨牙,未发现第3磨牙出现龋病。口腔内视诊检出第3磨牙978颗,正常萌出193颗,阻生785颗。X线检查检出1398颗,正常萌出228颗,阻生1170颗;口腔内4个解剖区域均可检出较多阻生第3磨牙,下颌第3磨牙阻生率非常显著高于上颌(P<0.01)。出现第3磨牙肿胀、疼痛症状97例中,第3磨牙正常萌出者多于阻生者,但二者比较,差异不显著(P>0.05);未出现症状310例中,第3磨牙阻生者非常显著多于正常萌出者(P<0.01)。结论:空军招飞学员第3磨牙阻生情况较多见,且以下颌第3磨牙阻生多发,应给予足够重视,对可能出现的症状及早预防、及早治疗。
OBJECTIVE: To investigate the eruptions, impaction and dental caries of the third molars of Air Force recruiting students. Methods: Forty-seven aircrews recruited from the Air Force were recruited. Through interrogation, intra-oral visual examination and full-face tomographic X-ray examination, we observed the normal eruption, impaction and dental caries of the third molars in the four anatomical areas What happened? Results: All the subjects examined at least one third molar and found no evidence of dental caries in the third molar. In oral cavity, there were 978 third molar teeth, 193 normal eruptions and 785 obstruction implants. X-ray examination detected 1398, eruption of 228 normal, impacted 1170; 4 anatomical areas can be detected more impacted third molar, mandibular third molar rate was significantly higher than the maxillary (P <0.01). In the 97 cases with the third molars swelling and pain symptom, the third molars had more normal eruption than those with no symptoms, but the difference was insignificant (P> 0.05). Among the 310 cases without symptoms, the third molars were impacted Were significantly more than those of normal eruptions (P <0.01). CONCLUSION: The air force trainee impacted on the 3rd molars is more common, and the third molars impacted frequently in the lower jaw should pay enough attention to the possible symptoms of early prevention and early treatment.