Relationship between presence of abfractions and premature contacts

ABSTRACT: Abfractions (AFs) are non-carious cervical lesions considered of multifactorial etiology by several authors. Objective: Relate the presence of premature contacts and AFs. Materials & Methods: The original number of students to be analyzed were 117, 36 of whom (equal amount of women and men) were finally chosen for presenting premature contacts. 19 of them presented abfractions. A survey was conducted with questions on issues like toothbrushing habits, diet and some gastric disorders; besides the participants had to take the Hamilton Anxiety Rating Scale. Then, stone models were obtained and mounted for further occlusal analysis with WCM ® semi-adjustable articulator searching the abfractions and their coincidence with premature contacts. Fisher's exact test (p<0,05) was used to associate AF with toothbrushing habits, diet, burning symptoms and gastroesophageal reflux. Chi-square test (p<0,05) was used to associate AFs and premature contacts. Student's t-distribution was used to associate AFs with anxiety. Results: There was a significant relationship between AFs presence and premature contacts (p=0,00). There was not a significant relationship between presence of AFs and toothbrushing habits and diet. There was not a significant relationship between presence of AFs and anxiety. Conclusions: AF presence do associate with premature contacts in the same affected tooth.

Análise clínica de pacientes portadores de lesões cervicais não cariosas e sua relação com hábitos / Clinical analysis of patients with non-carious cervical lesions and its relation to habits / Clinical analysis of patients with non-cariouscervical lesions and its relation to habits

Introdução e objetivo: Este estudo teve por objetivo identificar apresença de lesões cervicais não cariosas (LCNCs) e correlacioná-lascom a presença de contatos dentários prematuros e hábitos alimentares,parafuncionais e de higiene envolvidos em seu desenvolvimento.Material e métodos: Foram avaliados 100 pacientes da UniversidadeFederal de Sergipe, de ambos os gêneros, com idade de 18 a 64 anos,de acordo com critérios para identificação de LCNCs. Os indivíduosresponderam ao questionário com perguntas referentes a idade, gênero,dieta, hábitos parafuncionais e hábitos de higiene. Na identificação delesões cervicais, as faces vestibulares e linguais ou palatinas foramexaminadas. Posteriormente os pacientes que apresentaram LCNCs foram avaliados em relação à presença de algum contato prematuro.A análise estatística para avaliar as associações dos hábitos com apresença de LCNCs foi feita por meio do teste qui-quadrado de Pearson.Em alguns casos foi utilizado o teste exato de Fisher. Para comparar amédia de idade foi empregado o teste T-Student. Em todas as situaçõesfoi considerado o nível de significância de 5% (p < 0,05). Resultados:Os resultados foram analisados estatisticamente e não foi encontradaassociação entre a presença de LCNCs e os hábitos avaliados, comexceção de mastigação unilateral. Conclusão: A ocorrência de LCNCsnão pode ser atribuída somente a um único fator etiológico. A maiorfrequência de lesões foi em pré-molares, seguidos pelos molares, e amenor ocorrência, entre os incisivos e os caninos. Há elevada frequênciade pessoas com contatos prematuros na amostra de pacientes comlesão. O avançar da idade dos pacientes está diretamente relacionadocom a presença das lesões.

Introduction and objective: This study aimed to identify the presenceof non-carious cervical lesions (NCLs) and correlate them to thepresence of premature dental contacts and eating, parafunctional andhygiene habits involved in its development. Material and methods:100 patients were evaluated at the Federal University of Sergipe, bothgenders, aged 18 to 64 years, according to criteria for identifying NCLs.Individuals answered to the questionnaire with questions regarding age,gender, diet, parafunctional and hygiene habits. In the identificationof cervical lesions, the vestibular and lingual or palatine faces wereexamined. Subsequently, the patients who presented NCLs wereevaluated for the presence of a premature contact. Statistical analysisto evaluate the associations of habits with NCLs was performed usingthe Pearson?s chi-square test. In some cases the Fisher?s exact test wasused. The T-Student test was used in order to compare the mean age.In all cases the significance level of 5% (p < 0.05) was considered.Results: The results were statistically analyzed and no associationbetween the presence of NCLs and the evaluated habits was found,except for unilateral mastication. Conclusion: The occurrence of NCLscannot be attributed only to a single etiological factor. The highestfrequency of lesions was in premolars, followed by molars, and thelowest occurrence was between incisors and canines. There is a highfrequency of patients with premature contacts in the sample of patientswith lesion. The increasing age of patients is directly related to thepresence of lesions.