M S Muthu1, M Kirthiga2, Justin Cheoun Lee3, Gurusamy Kayalvizhi4, Vijay Prakash Mathur5, Deivanayagam Kandaswamy6, Naveen Jayakumar7. 1. Dr. Muthu MS is a professor and head, Centre for Early Childhood Caries Research, Department of Pediatric and Preventive Dentistry, Faculty of Dental Sciences, Sri Ramachandra Institute of Higher Education and Research; and an adjunct research associate, Centre of Medical and Bio-Allied Health Sciences Research, Ajman University, United Arab Emirates. 2. Dr. Kirthiga M is an assistant professor, Centre for Early Childhood Caries Research, Department of Pediatric and Preventive Dentistry, Faculty of Dental Sciences, Sri Ramachandra Institute of Higher Education and Research, Chennai, Tamil Nadu; and a Early Career Fellow, Wellcome Trust (UK) DBT India Alliance, Hyderabad, India; kirthi487@gmail. com. 3. Dr. Lee is in private practice, Seoul, South Korea. 4. Dr. Kayalvizhi is a professor and head, Department of Pedodontics and Preventive Dentistry, Syamala Reddy Dental College, Bangalore, Karnataka, India. 5. Dr. Mathur is a professor and head, Division of Pedodontics and Preventive Dentistry, Centre for Dental Education and Research, All India Institute of Medical Sciences, New Delhi, India. 6. Dr. Kandaswamy is a former dean, Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, Sri Ramachandra Institute of Higher Education and Research, Chennai, India. 7. Dr. Jayakumar is a professor and head, Department of Oral and Maxillofacial Surgery, Faculty of Dental Sciences, Sri Ramachandra Institute of Higher Education and Research, Chennai, India.
Abstract
Purpose: The purpose of the present study was to evaluate the individual susceptibility of four different types of OXIS contact areas (open [O], point [X], straight [I], and curved [S]) to approximal caries in children. Methods: A retrospective cohort study was performed using clinical photographs and cone-beam computed tomography images of children, available from January 1, 2014, to August 31, 2015, showing the presence of at least one caries-free contact area between the primary molars. A single calibrated examiner scored 1,102 selected contacts using OXIS criteria from the occlusal view and subsequently evaluated the same contacts with a minimum follow-up period of one year for the presence of approximal caries. Results: Of the 1,102 contacts, 259 (23.5 percent) were found to be carious or restored due to approximal caries. Multivariate logistic regression analysis showed that only the type of contact played a significant role in caries prevalence (P<0.05). The odds ratios of OXIS contacts for the development of approximal caries were: S contact-147.4 (95 percent confidence interval [95% CI] equals 19.7 to 1101.7); I contact-24.5 (95% CI equals 3.4 to 177.9); X contact-1.1 (95% CI equals 1.0 to 12.5); and O contact-1.00 (reference). Conclusions: Among the OXIS contacts, the S type was most susceptible to approximal caries due to its complex morphology. The broad contact areas, namely, I and S types, are at greater risk for approximal caries in primary molars than O and X contacts.
Purpose: The purpose of the present study was to evaluate the individual susceptibility of four different types of OXIS contact areas (open [O], point [X], straight [I], and curved [S]) to approximal caries in children. Methods: A retrospective cohort study was performed using clinical photographs and cone-beam computed tomography images of children, available from January 1, 2014, to August 31, 2015, showing the presence of at least one caries-free contact area between the primary molars. A single calibrated examiner scored 1,102 selected contacts using OXIS criteria from the occlusal view and subsequently evaluated the same contacts with a minimum follow-up period of one year for the presence of approximal caries. Results: Of the 1,102 contacts, 259 (23.5 percent) were found to be carious or restored due to approximal caries. Multivariate logistic regression analysis showed that only the type of contact played a significant role in caries prevalence (P<0.05). The odds ratios of OXIS contacts for the development of approximal caries were: S contact-147.4 (95 percent confidence interval [95% CI] equals 19.7 to 1101.7); I contact-24.5 (95% CI equals 3.4 to 177.9); X contact-1.1 (95% CI equals 1.0 to 12.5); and O contact-1.00 (reference). Conclusions: Among the OXIS contacts, the S type was most susceptible to approximal caries due to its complex morphology. The broad contact areas, namely, I and S types, are at greater risk for approximal caries in primary molars than O and X contacts.
Authors: M Kirthiga; M S Muthu; Justin Jae Cheoun Lee; G Kayalvizhi; Vijay Prakash Mathur; Ji Soo Song; Kim Shin; R Praveen Journal: Int J Paediatr Dent Date: 2020-07-20 Impact factor: 3.455
Authors: John J Warren; Rebecca L Slayton; Takuro Yonezu; Michael J Kanellis; Steven M Levy Journal: Pediatr Dent Date: 2003 Mar-Apr Impact factor: 1.874