ABSTRACT
Background: Strip crowns are the first treatment of choice for restoring anterior teeth affected with early childhood caries. However, shade matching of resin composites is still an issue. The broad color matching ability of a recently introduced single shade composite, Omnichroma eliminates the need for shade-matching procedure, reduces composite inventory, and minimizes chair-side time. Aim: The aim is to evaluate the color match, color stability, and retention of one shade universal composite resin, Omnichroma and nanohybrid resin composite, Tetric-N-Ceram. Settings and Design: The study design involves split-mouth randomized controlled trial. Materials and Methods: The study was conducted on 25 children aged 3–5 years with multi-surface caries lesions in primary maxillary anterior teeth. Teeth were allocated to two groups randomly: Group 1 – One shade universal composite, Omnichroma (n = 25), Group 2 – Nanohybrid composite, Tetric-N-Ceram (n = 25). After caries excavation and tooth preparation, teeth were restored with corresponding materials using strip crowns. Color match at baseline, color stability, and retention after 6- and 12-month follow-up were evaluated using the Modified United States Public Health Services criteria. Statistical Analysis: The Mann–Whitney U test and Wilcoxon signed-rank test were used to analyze the data. Results: On comparison of Omnichroma and Tetric-N-Ceram groups, no statistically significant difference was observed in the color match at baseline (P = 0.716) as well as color stability (P = 0.575 at 6 months and 0.990 at 12 months) and retention (P = 0.153 at 6 months and 0.226 at 12 months) at both 6- and 12-month intervals. On intragroup comparison, the difference in the color stability at 6 and 12-month interval was statistically significant (P = 0.001) for both the groups, indicating that the color stability of restorations was better at 6-month interval compared to 12-month interval. In both Omnichroma and Tetric-N-Ceram groups, retention of restorations was better at 6-month interval compared to 12-month interval and this difference was statistically significant (P = 0.025 and 0.014, respectively). Conclusion: The clinical performance of Omnichroma in terms of color match, color stability, and retention was comparable to nanohybrid composite, Tetric-N-Ceram.
ABSTRACT
Background: Fragment re-attachment has been considered as one of the treatment modalities for the management of fractured anterior teeth. Hydration of fractured fragments aids in inhibiting the loss of ions and maintains vitality and esthetics. Aim: The study aimed to evaluate the effect of preconditioning the fractured fragments with remineralizing agents on fracture resistance of re-attached teeth. Settings and Design: This was an in vitro study. Materials and Methods: Sixty freshly extracted noncarious human permanent maxillary central and lateral incisors were randomly allocated into three Groups of 20 each: Group 1: 2% sodium fluoride (2%NaF), Group 2: casein phosphopeptide–amorphous calcium phosphate (CPP-ACP), and Group 3: self-assembling peptide P11-4 (SAP). These were further divided into two subgroups of 10 teeth each, based on contact time with remineralizing agents, i.e., 30 min and 2 h. Fractured fragments were treated with remineralizing agents for a specified contact time and then re-attached with flowable composite resin. Force required to fracture the re-attached tooth was recorded in Newtons using universal testing machine. Statistical Analysis: Unpaired t-test, one-way analysis of variance test, and post hoc Tukey test were used for the statistical analysis. Results: A higher fracture resistance was noticed in fragments treated with 2% NaF (30 min- 215.6 N, 2 h- 188.5 N) compared to CPP-ACP (30 min- 141.3 N, 2 h- 111.1 N) and SAP (30 min- 134.8 N, 2 h- 149.5 N). At 30 min interval, it was found to be more in 2% NaF and CPP-ACP groups compared to 2 h. However, it increased with time in the SAP group. A statistically significant difference was found between the groups at both time intervals (P = 0.007 and 0.017). Conclusion: Preconditioning of fractured coronal fragments with 2% NaF showed higher fracture resistance compared to CPP-ACP and self-assembling peptide P11-4. Samples treated with SAP P11-4 exhibited good fracture resistance at 2 h contact time.
ABSTRACT
Background: Vitamin D plays an essential role in the formation of healthy teeth, protection against dental caries, and the appropriate secretion of salivary calcium. Salivary calcium and phosphate help in maintaining equilibrium between demineralization and remineralization of teeth. If we know the association between serum Vitamin D and salivary calcium and phosphorus, we may get a clue regarding serum Vitamin D levels which in turn is essential for good oral health. Aim: The aim of this study was to assess the association of serum Vitamin D levels and salivary calcium and phosphorus levels in children with dental caries. Settings and Design: This was a comparative cross-sectional study. Materials and Methods: One hundred children of age 6–11 years, 50 with Decayed, Missing, and Filled Teeth (DMFT) ?5 (test group) and 50 with DMFT = 0 (control group), were included in the study. Oral examination was carried out and DMFT/deft scores were recorded. Serum 25-hydroxy Vitamin D levels and salivary calcium and phosphorous levels were measured. Statistical Analysis: Independent sample t-test, linear regression analysis, and Pearson correlation test were used for statistical analysis. Results: Children with dental caries have shown lesser mean serum Vitamin D levels (15.37 ± 3.53) than caries-free children (17.26 ± 3.16). Children with decayed teeth have exhibited lower salivary calcium levels (3.92 ± 0.99) than those without caries (4.42 ± 1.37). Conversely, children with dental caries have shown higher mean salivary phosphate levels (6.27 ± 1.74) than caries-free children (5.18 ± 1.47). There is a significant decrease in salivary calcium (P = 0.018) and serum Vitamin D (P = 0.004) with a significant increase in number of decayed teeth. The greater the Vitamin D deficiency, the lesser are the salivary calcium levels observed (P = 0.001). Conclusions: Children with Vitamin D deficiency have lower salivary calcium levels. Vitamin D deficiency and lower salivary calcium levels can be the potential risk factors for the occurrence of dental caries.