Developmental Anomalies of Permanent Lateral Incisors in Young Patients
Developmental Anomalies of Permanent Lateral Incisors in Young Patients
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DOI：
10.17796/jcpd.33.3.c74j49r738676671
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发表时间：
2009-03-01
影响因子：
1.3
通讯作者：
Maki, Kenshi
中科院分区：
文献类型：
--
作者：
Fujita, Yuko;Hidaka, Akiko;Maki, Kenshi
目的：阐明日本年轻患者中恒牙侧切牙发育异常的患病率。研究设计：在1990年至2008年期间，在九州齿科大学医院儿童牙科部门和北九州市的四家私立儿童牙科诊所共观察了1375名患者。年龄5 ~ 19岁的患者均行冠状位片和根尖周片检查。结果：100例患者中，侧切牙发育不全的发生率为7.3%，女孩多于男孩。上、下侧切牙缺失的发生率分别为2.7%和4.8%（34和63例患者）。9例（0.7%）患者有小牙。5例患者（0.4%）出现皮疹障碍。5例患者中有2例因牙瘤或多生牙而出现萌出障碍。结论：在我们的研究中，日本儿童的侧切牙发育不全的患病率高于其他人群，萌出障碍发生的频率低于发育不全和小牙。然而，早期鉴别诊断的皮疹障碍是重要的，以便开始适当的治疗在最佳时间。
Objective: To elucidate the prevalence of developmental anomalies of permanent lateral incisors among young patients in Japan. Study deign: A total of 1375 patients were observed between 1990 and 2008 at the Department of Pediatric Dentistry in the Kyushu Dental College Hospital and four private pediatric dental clinics in Kitakyushu City. Panoramic and periapical radiographs were examined for all those patients aged 5 to 19 years. Results: The prevalence of agenesis of the lateral incisors was 7.3% (100 patients), with more girls than boys being affected. The prevalence rates of absent upper and lower lateral incisors were 2.7 and 4.8% (34 and 63 patients), respectively. Nine (0.7%) of the total patients had microdontia. Eruption disturbance was present in five patients (0.4%). Two of five patients presented with a disturbed eruption owing to an odontoma or a supernumerary tooth. Conclusion: In our study, the prevalence of agenesis of the lateral incisors was higher in Japanese children than in other populations, and eruption disturbance occurred less frequently than agenesis and microdontia. Nevertheless, the early differential diagnosis of an eruption disturbance is important in order to begin appropriate treatment at the optimal time.