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Three-year randomised clinical trial to evaluate the clinical performance, quantitative and qualitative wear patterns of hybrid composite restorations.

Palaniappan S, Elsen L, Lijnen I, Peumans M, Van Meerbeek B, Lambrechts P - Clin Oral Investig (2009)

Bottom Line: The gypsum replicas at each recall were used for 3D laser scanning to quantify wear, and the epoxy resin replicas were observed under scanning electron microscope to study the qualitative wear patterns.Within the observation period, the nano-hybrid and micro-hybrid restorations evolved better in polishability with improved surface gloss retention than the conventional hybrid counterpart.Qualitatively, while the micro-filled and nano-hybrid composite restorations exhibited signs of fatigue similar to the conventional hybrid composite restorations at heavy occlusal contact area, their light occlusal contact areas showed less surface pitting after 3 years of clinical service.

View Article: PubMed Central - PubMed

Affiliation: Leuven BIOMAT Research Cluster, Department of Conservative Dentistry, School of Dentistry, Oral Pathology and Maxillo-Facial Surgery, Catholic University of Leuven, Kapucijnenvoer 7, 3000 Leuven, Belgium.

ABSTRACT
The aim of the study was to compare the clinical performance, quantitative and qualitative wear patterns of conventional hybrid (Tetric Ceram), micro-filled hybrid (Gradia Direct Posterior) and nano-hybrid (Tetric EvoCeram, TEC) posterior composite restorations in a 3-year randomised clinical trial. Sixteen Tetric Ceram, 17 TEC and 16 Gradia Direct Posterior restorations were placed in human molars and evaluated at baseline, 6, 12, 24 and 36 months of clinical service according to US Public Health Service criteria. The gypsum replicas at each recall were used for 3D laser scanning to quantify wear, and the epoxy resin replicas were observed under scanning electron microscope to study the qualitative wear patterns. After 3 years of clinical service, the three hybrid restorative materials performed clinically well in posterior cavities. Within the observation period, the nano-hybrid and micro-hybrid restorations evolved better in polishability with improved surface gloss retention than the conventional hybrid counterpart. The three hybrid composites showed enamel-like vertical wear and cavity-size dependant volume loss magnitude. Qualitatively, while the micro-filled and nano-hybrid composite restorations exhibited signs of fatigue similar to the conventional hybrid composite restorations at heavy occlusal contact area, their light occlusal contact areas showed less surface pitting after 3 years of clinical service.

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Related in: MedlinePlus

Mean vertical and volume loss of enamel and composites at different recalls. The change in the a vertical and b volume loss magnitude between enamel and the composites over the study period is plotted
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Fig2: Mean vertical and volume loss of enamel and composites at different recalls. The change in the a vertical and b volume loss magnitude between enamel and the composites over the study period is plotted

Mentions: Vertical loss in height From baseline up to 36 months for 49 restorations, the mean and standard deviation (SD) values for the cumulative mean vertical loss of enamel (heavy and light) and the three materials are shown in Table 8 and Fig. 2a. No statistically significant higher cumulative vertical loss mean wear was observed with any of the three evaluated materials versus enamel at heavy OCAs throughout the recall period of 36 months (p > 0.05). In addition, none of the three materials showed statistically significant difference in the vertical wear versus any of the other evaluated materials along the entire recall period (p > 0.05). The differential wear calculated as the difference in the mean vertical loss of every material with the mean vertical loss of enamel in every patient is plotted in Fig. 3a. Only the graph at 36 months is shown, since it was not different from the graphs of other recall periods. Vertical loss values of areas with chipped overhangs are not reported, as the overhang fracture occurs in a different manner than that occurring in restored regions.Table 8


Three-year randomised clinical trial to evaluate the clinical performance, quantitative and qualitative wear patterns of hybrid composite restorations.

Palaniappan S, Elsen L, Lijnen I, Peumans M, Van Meerbeek B, Lambrechts P - Clin Oral Investig (2009)

Mean vertical and volume loss of enamel and composites at different recalls. The change in the a vertical and b volume loss magnitude between enamel and the composites over the study period is plotted
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2908443&req=5

Fig2: Mean vertical and volume loss of enamel and composites at different recalls. The change in the a vertical and b volume loss magnitude between enamel and the composites over the study period is plotted
Mentions: Vertical loss in height From baseline up to 36 months for 49 restorations, the mean and standard deviation (SD) values for the cumulative mean vertical loss of enamel (heavy and light) and the three materials are shown in Table 8 and Fig. 2a. No statistically significant higher cumulative vertical loss mean wear was observed with any of the three evaluated materials versus enamel at heavy OCAs throughout the recall period of 36 months (p > 0.05). In addition, none of the three materials showed statistically significant difference in the vertical wear versus any of the other evaluated materials along the entire recall period (p > 0.05). The differential wear calculated as the difference in the mean vertical loss of every material with the mean vertical loss of enamel in every patient is plotted in Fig. 3a. Only the graph at 36 months is shown, since it was not different from the graphs of other recall periods. Vertical loss values of areas with chipped overhangs are not reported, as the overhang fracture occurs in a different manner than that occurring in restored regions.Table 8

Bottom Line: The gypsum replicas at each recall were used for 3D laser scanning to quantify wear, and the epoxy resin replicas were observed under scanning electron microscope to study the qualitative wear patterns.Within the observation period, the nano-hybrid and micro-hybrid restorations evolved better in polishability with improved surface gloss retention than the conventional hybrid counterpart.Qualitatively, while the micro-filled and nano-hybrid composite restorations exhibited signs of fatigue similar to the conventional hybrid composite restorations at heavy occlusal contact area, their light occlusal contact areas showed less surface pitting after 3 years of clinical service.

View Article: PubMed Central - PubMed

Affiliation: Leuven BIOMAT Research Cluster, Department of Conservative Dentistry, School of Dentistry, Oral Pathology and Maxillo-Facial Surgery, Catholic University of Leuven, Kapucijnenvoer 7, 3000 Leuven, Belgium.

ABSTRACT
The aim of the study was to compare the clinical performance, quantitative and qualitative wear patterns of conventional hybrid (Tetric Ceram), micro-filled hybrid (Gradia Direct Posterior) and nano-hybrid (Tetric EvoCeram, TEC) posterior composite restorations in a 3-year randomised clinical trial. Sixteen Tetric Ceram, 17 TEC and 16 Gradia Direct Posterior restorations were placed in human molars and evaluated at baseline, 6, 12, 24 and 36 months of clinical service according to US Public Health Service criteria. The gypsum replicas at each recall were used for 3D laser scanning to quantify wear, and the epoxy resin replicas were observed under scanning electron microscope to study the qualitative wear patterns. After 3 years of clinical service, the three hybrid restorative materials performed clinically well in posterior cavities. Within the observation period, the nano-hybrid and micro-hybrid restorations evolved better in polishability with improved surface gloss retention than the conventional hybrid counterpart. The three hybrid composites showed enamel-like vertical wear and cavity-size dependant volume loss magnitude. Qualitatively, while the micro-filled and nano-hybrid composite restorations exhibited signs of fatigue similar to the conventional hybrid composite restorations at heavy occlusal contact area, their light occlusal contact areas showed less surface pitting after 3 years of clinical service.

Show MeSH
Related in: MedlinePlus