Malformation in the primary and permanent dentitions following trauma prior to tooth eruption: a case report

Cole B, Welbury R. Malformation in the primary and permanent dentitions following trauma prior to tooth eruption: a case report. Endod Dent Traumatol 1999; 15: 294–296. © Munksgaard, 1999.
Abstract — Dento-facial injuries that occur prior to the eruption of teeth in the primary dentition are rare, but can result in damage to the primary dentition. We report a rare case where an injury to the anterior maxilla and mandible of an infant prior to primary tooth eruption resulted in hypoplasia, displacement and impaction of the primary dentition and damage to a developing permanent tooth.     

An unusual primary first molar impaction associated with a supernumerary tooth. Case report

A case of an impacted primary first mandibular molar associated with a supernumerary tooth is described and illustrated with radiographs. A brief discussion of the findings and therapeutic considerations is presented.     

Cementoblastoma: A case report in deciduous tooth

Background

The benign cementoblastoma is an odontogenic tumor originated from neoplastic cementoblasts, a rare lesion mainly associated to impacted and deciduous teeth. It affects mostly young people with an average age of 20 years old, and its preferred location is in the posterior region of the mandible; the lesion will present itself fused both radiologically and microscopically to a root of an erupted permanent tooth, and the anatomopathological diagnosis is obtained through the analysis of the piece sent together with the involved dental element.

Case report

The present study presents a case of cementoblastoma in the mandible involving the second deciduous molar tooth and preventing the eruption of the premolar tooth in a girl aged 11 years old.

Discussion

This report discusses relevant aspects concerning clinical, radiographic, and histopathological characteristics and treatments.     

Severe sequelae of acute dental trauma in the primary dentition – a case report

Abstract –  The incidence of traumatic injuries to primary teeth is high. Previous studies report frequencies ranging from 4% to 33% of all children. The damage limitation and the prevention of sequelae are goals that shall direct the treatment for dental trauma. Inappropriate approachs to dental trauma can cause more damage than the trauma itself. This article describes the diagnosis, management and follow-up of a 5-year-old boy who presented with uncommon sequelae of an inappropriate approach following a severe luxation of the primary maxillary right central incisors 2 years ago.     

Pulp canal obliteration in an unerupted permanent incisor following trauma to its primary predecessor: a case report

Abstract  – Trauma to a primary tooth may result in damage to the underlying developing permanent tooth bud because of the close proximity between the root of the primary tooth and its permanent successor. We report an unusual case where injury to the primary dentition resulted in pulp canal obliteration (PCO) of a permanent maxillary central incisor prior to its eruption. The other permanent maxillary central incisor was diagnosed as malformed because of trauma to the primary dentition at an earlier age. The occurrences of PCO or crown malformation dose not routinely disrupt the eruption of those teeth. Periodic assessment is required to determine the need for endodontic intervention.     

Cementoblastoma associated with a primary tooth: a rare pediatric lesion

An intraosseous, slightly painful swelling was noted upon clinical examination of an eight-year-old girl. The swelling was of an unspecified duration and slow growing in nature. A radiopaque mass with a radiolucent periphery attached to the roots of the mandibular right second primary molar was noted on a periapical radiograph. The diagnosis of cementoblastoma was verified by the histologic assessment.     

下颌骨骨折患儿乳牙的正畸治疗1例

固定正畸治疗一般很少在乳牙列上进行。四川大学华西口腔医院正畸科对1例下颌骨骨折乳牙列患儿采取固定正畸的方法进行治疗,改善了患儿的咬合状况,骨折愈合良好。     

良性成牙骨质细胞瘤——病例报告及文献复习

良性成牙骨质细胞瘤是一种非常罕见的颌骨牙源性肿瘤,好发于青年,早期无临床症状,晚期会出现疼痛和颌骨膨胀.本病具有特征性的影像学和组织学表现,有助于与其它颌骨肿瘤相鉴别.只要完全切除肿瘤,很少复发.本文报告 1 例术后复发的良性成牙骨质细胞瘤病例.     

儿童乳牙龋和乳牙黑色素沉着关系研究

目的　评价学龄前儿童乳牙色素沉着患病率以及色素沉着与乳牙龋之间的关系。方法　选取上海市5个公立幼儿园的1 012名学龄前儿童进行调查,1名口腔医师采用WHO推荐的方法进行龋齿的检查,另1名口腔医师检查颊舌面色素沉着。采用SPSS软件对数据进行统计分析。结果　乳牙色素沉着的患病率为12.7%,色素沉着最常见的部位是下颌前牙的舌侧。乳牙色素沉着与年龄和性别无关。城区幼儿园儿童乳牙色素沉着患病率为16%,明显高于郊区儿童6.4%的患病率（P<0.001）。有色素沉着的儿童患龋率和龋失补牙数、龋失补牙面数分别为56.6%、2.94和4.41,明显低于无色素沉着儿童（72.1%,dmft:4.25; dmfs:7.06,P<0.001）。但两组龋齿的牙面分布比例无明显区别。结论　乳牙色素沉着和乳牙龋之间存在负相关关系。     

Orbital infection arising from a primary tooth: a case report

Odontogenic infections may spread to the orbit by one or more of several paths. Such extension is potentially dangerous and may lead to loss of vision. A case of infection from a primary tooth, which extended to the retrobulbar area is presented in this report. Treatment included surgical drainage of the resulting subperiosteal orbital abscess through a Caldwell-Luc approach as well as aggressive antibiotic therapy. The importance of early suspicion of this entity and its potential sequelae are discussed.     

数字影像系统测量分析融合牙乳牙列

目的探讨Digora数字影像系统测量牙列模型的新方法并用此方法分析乳牙融合牙列的特征。方法选取AB融合牙模型和BC融合牙模型各14副。用电子游标卡尺和Digora数字影像系统分别测量牙列,并统计分析结果。结果游标卡尺测量值稍大于Digora系统测量值,且两方法所测各值均相关(r>0.80,P<0.01),比值较稳定(均值为1.05)。融合牙的牙冠宽度明显小于非融合侧两同名牙冠宽度的和(P<0.05)。AB融合牙组CC—CC和CL—CL大于BC融合组(P<0.05)。融合牙组下颌对称性系数显示牙列的非对称状,中线偏向融合侧。且下颌融合侧三角形面积小于非融合侧三角形面积(P<0.01)。结论Digora数字影像系统测量结果稳定,有利于资料保存,便于临床使用;融合牙牙列与正常牙列的差异应予以重视。     

Early treatment of an intruded primary tooth: a case report

The report is about a case of total intrusion of a deciduous central incisor involving a male patient of 14 months of age. Repositioning of the intruded tooth was performed 20 minutes after the trauma, followed by placement with sutures. Clinical and radiographic monitoring performed after 1, 2, 4, 9, and 13 months showed normal characteristics. We emphasize the development of preventive programs promoting parental awareness of the importance of looking for prompt care, resulting in a better prognosis.     

Supernumerary tooth in the primary molar region: a case report

Supernumerary teeth are among the most common dental anomalies affecting the primary and permanent dentition. They are usually found in the anterior maxilla and occur infrequently in the primary dentition. The purpose of this paper was to report a case diagnosed with primary supernumerary tooth in the primary second molar region. The crown and root shape of the primary supernumerary tooth resembled that of the primary first molar. On radiographic examination, the primary supernumerary tooth was followed by a permanent supernumerary successor with an unusually big crown. The primary supernumerary molar was immediately extracted to avoid interference with the development of the second premolar's tooth bud. This dental anomaly is rarely observed, as only primary supernumerary teeth in the anterior region have been reported in the dental literature.     

Pyogenic granuloma subsequent to injury of a primary tooth. A case report

Summary. This paper shows a case of pyogenic granuloma occurring as a post-traumatic oral lesion, in a 19-month-old patient. The palatally chamfered fracture of a maxillary primary incisor together with the continuous sucking of a dummy could have caused the special shape of the pyogenic granuloma over the remaining coronal fragment.     

Caries in primary dentition related to age, sex social status, and county of residence in Finland

Abstract The study material consisted of 1417 children 6–8 years old representing 86% of a stratified random sample from the Finnish population. Data on caries and social class were obtained by questionnaire from the municipal dental clinics in 1978. Clinical findings for primary teeth were recorded by local dentists. Incisors were excluded from the study. 80% of the children had caries lesions, and 63 % were in need of restorative care. Mean dmft value was 4.4, mean dt, ft, and mt values were 2.3, 2.6 and 0.3, respectively. Occurrence of untreated caries lesions did not vary according to age. Compared to the girls, boys had lost twice as many teeth due to caries. No other differences were observed between sexes. Both past caries experience and need of restorative care increased continuously from the highest social class to the lowest. Observed regional differences were explained mainly by variation in social stratification, except in an area with abundant natural fluoride. More active dental care is needed for children with primary teeth, especially in lower social classes.     

Occlusal guidance for unilateral scissors bite in primary dentition: A case report

A scissors bite is one of the more unusual malocclusions in primary dentition. The purpose of this report is to describe the unilateral scissors bite in primary dentition and the treatment outcome following the use of constriction appliances. A 5-year, 5-month-old boy developed a scissors bite in the left molar region due to the extended width of the maxillary dental arch. Two types of appliances were used to reduce the width of the maxillary dental arch; one was a removable type modified from a conventional expansion plate, and the other was a fixed type modified from a quad-helix appliance. The left maxillary primary molars were able to bite normally after the treatment using both appliances. As a result, the left first molars also could be guided to a normal occlusion and prevented from becoming a scissors bite. We suggest that improvement of the scissors bite in the primary dentition stage can prevent subsequent malocclusions in permanent dentition.