The study compared the marginal accuracy of premade and cast abutments. Premade titanium, stainless steel, and gold abutments formed the control groups. Plastic abutments were cast in nickel-chromium, cobalt-chromium and grade IV titanium. The abutment/implant interface was analyzed. Analysis of variance and Duncan's multiple range test revealed no significant difference in mean marginal microgap between premade gold and titanium abutments and between premade stainless steel and cast titanium abutments. Statistically significant differences (P < .001) were found among all other groups.

The computer-aided design/computer-aided manufacturing (CAD/CAM) systems were introduced into dentistry in 1970s. This technology has evolved rapidly that, starting from a single crown to full mouth, rehabilitation is possible in a single day now. This article reviews the history, evolution, components, and various materials used for fabrication of prosthesis. It also evaluates popular CAD/CAM systems, its limitations, future evolvement, and also the dental considerations while using them.

Long-term success of a restoration is dependent on maintenance of harmony between the various components of stomatognathic system. The goal of any restorative treatment is to establish posterior occlusal contacts that stabilize the occlusion and to provide anterior guidance which will provide predictable amount of disocclusion during protrusive and lateral excursions. The clinician should have fundamental knowledge about the components of stomatognathic system, to restore the occlusion for the optimal functioning of stomatognathic system. Evaluation, diagnosis, and treatment planning should be carried out to decide whether the existing occlusion should be changed or not. If a reorganized approach is needed, it requires correction of the existing occlusion and the generation of a new occlusal scheme. This is quite challenging. It is not possible to propose a single protocol to treat every case. However, this article proposes certain guidelines which could be modified depending on existing occlusal condition of the patient.

IntroductionAssessment of difference in caries prevalence among twins may help determine the character and the extent of the influence exercised by the environment, as a complement of the genetic constitution.AimTo investigate the inter-pair differences in caries prevalence among South Indian monozygotic twins in relation to birth weight, birth order, and gender. Possible correlation among other attributes such as breastfeeding, socioeconomic status, oral habits, frequency of brushing, and sweet intake were also assessed.Materials and methodsA sample of 40 monozygotic children between the age group of 6 and 12 was selected. The parents were asked to complete the questionnaire and report with their children. Then dental examinations were carried out and the prevalence of dental caries among the twins were assessed.ResultsAmong the total samples, 61.5% exhibited caries. Lower birth weight twins showed an increased chance of caries (72.22%), compared to higher birth weight twins (68.18%). Second of the twins had an increased risk of dental caries (70%) compared to the first (60%). 90% of the male twins and 45% of the female twins had caries. The association between dental caries and other variables were also assessed; those who were exclusively breastfed had an increased risk (70%) of caries. Evaluation of socioeconomic status and caries revealed a risk of for the high (65%), middle (62.5%), and lower groups (58.33%). Children without oral habits showed a higher prevalence (73.3%) of caries when compared to those without any habits (50%). It was noticed that the brushing frequency is not related to the severity of caries. The strongest association was noticed between excessive sweet liking and prevalence of dental caries.ConclusionThe study revealed difference in caries prevalence among monozygotic twins in relation to birth weight, birth order, and gender. It was found that variations in caries prevalence existed with other attributes also.How to cite this articleZarina R, Kuriakose S, et al. Evaluation of Inter-pair Differences in Caries among South Indian Monozygotic Twins: A Cross-sectional Study. Int J Clin Pediatr Dent 2019;12(4):318–324.

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