Prevalence assessment of root dilaceration in permanent incisors

Abstract

Introduction: Root dilaceration is a dental anomaly characterized by an abnormal curvature of the dental root, which can cause problems during eruption and complications in the orthodontic and endodontic treatment or extraction. Objective: The aim of this study was to determine the prevalence of root dilaceration in permanent incisors in an oral radiology clinic in the city of João Pessoa / PB, Brazil. Methods: The sample consisted of 548 patients who allowed assessments of their dental radiographs, a total of 3,948 examined teeth. Each tooth was examined according to the occurrence of root dilaceration, regarding type (mild, moderate or severe), root third that it was in and direction of the root. The angle formed by the root deviation in relation to the long tooth axis was obtained by means of a diagram printed on transparent acetate, placed over the radiograph. Results: The results were analyzed with SPSS software (Statistical Package for Social Sciences) version 13.0, performing an exploratory data analysis. The prevalence of root dilaceration in the studied sample was 1.03% (41 cases), with higher incidence in males (65.8%), being the superior lateral incisor the most affected teeth (78%). The most prevalent type of root dilaceration was the mild one (73.1%), occurring more in the apical third (90.2%) and with distal direction of the root (95.1%). Conclusion: Considering these results, it is emphasized the importance of performing a diagnostic radiographic examination prior to planning a treatment in permanent anterior teeth. Keywords:Incisor. Tooth root. Tooth abnormalities. Dental radiograph. Prevalence. Introdução: a dilaceração radicular é uma anomalia dentária caracterizada por uma curvatura anormal na raiz do dente que pode causar problemas na erupção e complicações durante movimentação ortodôntica, tratamento endodôntico ou exodontia. Objetivo: o objetivo do presente trabalho foi verificar a prevalência da dilaceração radicular em incisivos permanentes, em uma clínica de radiologia odontológica da cidade de João Pessoa/PB. Método: a amostra foi constituída de 548 pacientes que possibilitaram avaliações em suas radiografias dentárias, totalizando 3948 dentes examinados. Examinou-se cada dente segundo a ocorrência de dilaceração radicular, com relação ao tipo (discreta, moderada ou severa), o terço radicular em que se encontrava e a direção da raiz. A angulação formada pelo desvio da raiz em relação ao longo eixo do dente foi obtida por meio de um diagrama impresso em acetato transparente, colocado sobre a radiografia. Resultados: os resultados foram analisados no programa SPSS, efetuando-se uma análise exploratória dos dados. A prevalência da dilaceração radicular na amostra estudada foi de 1,03% (41 casos), com maior incidência no sexo masculino (65,8%), sendo os incisivos laterais superiores os dentes mais acometidos (78%). O tipo de dilaceração radicular mais prevalente foi a discreta (73,1%), ocorrendo mais no terço apical (90,2%) e com direção distal da raiz (95,1%). Conclusão: diante desses res...

Orthodontic and surgical treatment of a patient with an impacted upper central incisor with dilacerations – systematic review of the literature with presentation of a case

“…The binomial test was used to determine the difference between the correlation of the presence or absence of complications associated with the occurrence of retained permanent incisors. Malcić et al [11] Evaluation of the frequency of occurrence of dilaceration in individual dental groups among Caucasians.…”

“…Dilaceration is the phenomenon of bending the root of the tooth in relation to its crown, which is usually observed among the third molars of the mandible [7][8][9][10]. Studies on the prevalence of dilaceration in individual dental groups showed the occurrence of this disorder within the central upper incisors within the range of 0.2-1.2% [7,9,11,12]. In studies on the prevalence of dental anomalies, apart from taurodontism, impacted teeth, hypodontia and supernumerary teeth, dilaceration was one of the most common dental defects and constituted between 1.4% and 46.71% of all dental anomalies [13][14][15][16][17][18][19][20][21][22].…”

“…In studies on the prevalence of dental anomalies, apart from taurodontism, impacted teeth, hypodontia and supernumerary teeth, dilaceration was one of the most common dental defects and constituted between 1.4% and 46.71% of all dental anomalies [13][14][15][16][17][18][19][20][21][22]. Dilaceration was more frequently observed in maxillary teeth than in mandibular teeth [9,11,23]. In two studies, dilaceration occurred to the same extent in maxilla and in the mandible [10,12].…”

“…The root curvature may be anterio-lingual or mesial-distal [24]. Silva [11] defines dilaceration as more than 20 degrees crown-root curvature. Hamasha [7], Malcić [9], Udoye [23] and Nabavizadeh [12] in their studies referred to dilaceration when the crown-root angulation exceeded 90% in the mesial or distal direction.…”

<b>Dilaceração radicular</b>: relato de caso clínico

“…A incidência dessa anomalia é baixa, não há predileção de sexo e é muito raro ocorrer em mais de um elemento dentário principalmente da mesma arcada (2). Os incisivos centrais superiores são os dentes mais acometidos (70,6%), seguido dos laterais (20,6%) e dos incisivos inferiores (8,8%) (3).…”