Supernumerary teeth in non-syndromic patients

Hyperdontia or supernumerary teeth without associated syndrome is a rare phenomenon, as supernumerary teeth are usually associated with cleft lip and palate or other syndromes such as Gardner's syndrome, cleidocranial dysplasia, and so on. Five patients with supernumerary teeth visited our department. They had no familial history or other pathology, certain treatment protocols was modified due to the presence of supernumerary teeth. Non-syndromic supernumerary teeth, if asymptomatic, need to have periodical radiographic observation. If they showed no variation as they impacted in the jaw, careful examination is necessary because they may develop into pathological status such as dentigerous cysts. The importance of a precise clinical history and radiographic examination for patients with multiple supernumerary teeth should be emphasized.     

多生牙及其诊断治疗

多生牙又称额外牙,指牙齿数目上的增多,是常见的牙齿发育异常,多见于上颌前牙区。其形态有圆锥型、结节型、补充型和牙瘤型。多生牙的发病机制尚无定论,目前牙板的过度活跃学说为多数学者所认可。多生牙可与多种综合征相关且其存在可能会造成一系列的并发症,患者常以冠周炎、前牙异常间隙和乳恒牙替换异常等原因就诊,因此,早发现、早诊断和适当的干预治疗极为重要。本文就多生牙的病因机制、临床表现、并发症、诊治原则与方法作一综述。     

Supernumerary teeth: a case report

Supernumerary teeth are the teeth present in addition to the normal set of teeth. They may be single, multiple, unilateral or bilateral erupted or unerupted and in one or both jaws. Multiple supernumerary teeth are rare in individuals with no other associated diseases or syndromes. Our case presents with 12 supernumerary teeth in permanent dentition, of which six were erupted and six unerupted and a history of extraction of three teeth with no associated syndrome.     

Supernumerary teeth vary depending on gender

The presence of supernumerary teeth (ST) is a dental developmental anomaly of patterning and morphogenesis. Its variability of morphology, location and developmental timing can shed light on its etiology. In this work we report ST patterns. Orthopantomograms of 1,166 pediatric subjects were examined and the morphology, location and timing of the formation of ST were determined. The frequency of supernumerary teeth in the studied population was 2.3% (n = 27). Twenty-five subjects presented one ST. Maxilla midline was the most commonly affected region (nine cases). We noted high incidence of conical morphology in the midline region. Only teeth with tuberculate morphology presented delayed formation. ST in the midline region occurred more often in males whereas ST in the incisor region were more common in females. In conclusion, ST patterns vary depending on gender.     

Supernumerary teeth and orthodontic treatment]

According to the orthodontist supernumerary teeth on dental arches necessitate a special analysis of the occlusion to decide which to keep and which ones to pull out. Then he must solve the problem of the new occlusion to have. Thus in this study the authors, from their personal experiences of treatment of cases about supernumerary teeth go through the matter.