Clinical evaluation of the association of noncarious cervical lesions, parafunctional habits, and TMD diagnosis.
OBJECTIVE
To verify a potential association between the presence of noncarious cervical lesions, parafunctional habits, and temporomandibular disorder (TMD) diagnosis.


METHODS
Sample-size calculation provided a value of 130 participants with a confidence level of 95% and an error margin of 5%. A population of 132 volunteers (30 men: mean age, 23.7 ± 3.05 years; 102 women: mean age, 24.9 ± 5.86 years) underwent an oral examination and was interviewed by a trained dentist. The following parameters were registered: personal details, TMD diagnosis, parafunctional habits, and noncarious cervical lesion presence. The population was then divided into a noncarious cervical lesion group and a control group and subjected to the t test, chi-square test, Fisher exact test, and Spearman correlation (α = .05).


RESULTS
Noncarious cervical lesions were present in 39% of the population, with the largest concentrations found in the maxillary premolars (32%). The data showed a significant association between noncarious cervical lesion presence, tooth clenching (P = .03), and nail biting (P = .02), as well as a relation with TMD diagnosis (Fonseca Index [P = .01] and Research Diagnostic Criteria for TMD (RDC/TMD) [P = .004] ). In the noncarious cervical lesion group, direct rank correlation was found between maxillary premolars and clenching (P = .03), mandibular canines and nail biting (P = .05), and mandibular incisors and parafunctional habits without dental contacts (P = .02).


CONCLUSIONS
Parafunctional habits and TMD presence should be taken into account in the diagnosis and treatment plan of noncarious cervical lesions.
UNESP-Univ Estadual Paulista, Discipline of Integrated Clinic, Department of Surgery and Integrated Clinic, Dentistry School of Araçatuba, Araçatuba, São Paulo, Brazil. brandini@foa.unesp.br
Daniela Atili
DA
Brandini
Denise
D
Pedrini
Sônia Regina
SR
Panzarini
Igor Mariotto
IM
Benete
Carolina Lunardelli
CL
Trevisan
D000328:Adult; D001641:Bicuspid / Q000473:pathology; D002012:Bruxism / Q000150:complications*; D003481:Cuspid / Q000473:pathology; D003769:Dental Occlusion, Traumatic / Q000150:complications*; D005260:Female; D006801:Humans; D007180:Incisor / Q000473:pathology; D008297:Male; D008334:Mandible; D008437:Maxilla; D008875:Middle Aged; D008963:Molar / Q000473:pathology; D009259:Nail Biting / Q000009:adverse effects; D013705:Temporomandibular Joint Disorders / Q000145:classification / Q000150:complications*; D014061:Tongue Habits; D019237:Tooth Cervix / Q000473:pathology*; D057085:Tooth Wear / Q000150:complications*; D055815:Young Adult