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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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Percentage alpha ratings of evaluated restorations at 36-month recall. The percentage of alpha scores of each criterion between the different hybrid composite restorations at 36-month recall. AF anatomic form, SC secondary caries, CM colour match, RET retention, MA marginal adaptation, POL polishability, SS surface staining, STH soft tissue health, POS post-operative sensitivity, PCP proximal contact points
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Fig1: Percentage alpha ratings of evaluated restorations at 36-month recall. The percentage of alpha scores of each criterion between the different hybrid composite restorations at 36-month recall. AF anatomic form, SC secondary caries, CM colour match, RET retention, MA marginal adaptation, POL polishability, SS surface staining, STH soft tissue health, POS post-operative sensitivity, PCP proximal contact points

Mentions: None of the restorations failed due to secondary caries, post-operative sensitivity and bulk or catastrophic fractures within the observation period of 3 years, contributing to 100% retention rate. The results of the clinical evaluation of 49 restorations at baseline, 6, 12, 24 and 36 months are shown in Tables 5, 6 and 7, with the percentage of alpha scores at 36 months plotted in Fig. 1. There were no statistically significant differences found between the three types of restorative materials with regard to anatomical form, retention, secondary caries, gingival health, post-operative sensitivity and loss of proximal contact points (p > 0.05).Table 5


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)

Percentage alpha ratings of evaluated restorations at 36-month recall. The percentage of alpha scores of each criterion between the different hybrid composite restorations at 36-month recall. AF anatomic form, SC secondary caries, CM colour match, RET retention, MA marginal adaptation, POL polishability, SS surface staining, STH soft tissue health, POS post-operative sensitivity, PCP proximal contact points
© Copyright Policy
Related In: Results  -  Collection

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

Fig1: Percentage alpha ratings of evaluated restorations at 36-month recall. The percentage of alpha scores of each criterion between the different hybrid composite restorations at 36-month recall. AF anatomic form, SC secondary caries, CM colour match, RET retention, MA marginal adaptation, POL polishability, SS surface staining, STH soft tissue health, POS post-operative sensitivity, PCP proximal contact points
Mentions: None of the restorations failed due to secondary caries, post-operative sensitivity and bulk or catastrophic fractures within the observation period of 3 years, contributing to 100% retention rate. The results of the clinical evaluation of 49 restorations at baseline, 6, 12, 24 and 36 months are shown in Tables 5, 6 and 7, with the percentage of alpha scores at 36 months plotted in Fig. 1. There were no statistically significant differences found between the three types of restorative materials with regard to anatomical form, retention, secondary caries, gingival health, post-operative sensitivity and loss of proximal contact points (p > 0.05).Table 5

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