Indirect Composite Veneers Research Articles

Clinical survival of No-prep indirect composite laminate veneers: a 7-year prospective case series study

BackgroundThe no preparation technique which is a reversible form of treatment characterized by the absence of tooth tissue preparation and preserves the soft tissue architecture while preserving all natural tooth structures is indicated in cases where the tooth structure allows material to be added. The aim of this study is to evaluate the clinical performance and survival rates of indirect composite laminate veneers with no preparation after 7 years.Materials and methodsA total of 80 indirect composite veneers were placed on maxillary anterior teeth in 35 patients (n = 80). Diastema (n = 64), wedge tooth anomalies (n = 9) and re-shaping (n = 7) were the main indications for veneer treatments. All laminate veneers were fabricated with an indirect microhybrid composite material (Gradia, GC Dental). No tooth preparation was performed. Light-cured resin cement (Choice 2, Bisco) was used to lute the veneers. Composite veneers were evaluated using Modified United States Public Health Service criteria. Survival rates of the veneers were calculated using Kaplan-Meier statistics. The data containing the results of the USPHS criteria at baseline, 2 years and 7 years was statistically analyzed using Wilcoxon Signed Rank test at the 0.05 level of significance.ResultsThe overall survival rate was 91.3%. After 7 years, 7 absolute failures including 4 debonding (marginal adaptation, score 4) and 3 fractures (fracture of restoration, score 3) were noted. Color match was scored as 1 (n = 34) and 2 (n = 15). Slightly rough surfaces (41 of 73 laminates) and slight marginal discoloration (15 of 73 laminates) were noted. The overall scores after 84 months were significantly higher than the baseline scores for the marginal adaptation (p = 0.008), color match (p = 0.000), marginal discoloration (p = 0.000), surface roughness (p = 0.000), and fracture of restoration (p = 0.001) criteria.ConclusionsIn this study, indirect composite veneers without any preparation on maxillary anterior teeth showed acceptable performance in terms of both survival rate and quality of restorations. This procedure offers a predictable and successful treatment that ensures maximum preservation of the intact tooth.

Fracture strength of direct and indirect composite veneers after aging: An in vitro study

Fracture strength of direct and indirect composite veneers after aging: An in vitro study

Advances in Diastema Closure and Tooth Shape Change

Diastema is a prevalent condition that causes poor aesthetics and increased self-consciousness among individuals. Diastema is defined as a gap or distance of two or more neighbouring teeth. Many patients desire the closure of diastemas for cosmetic reasons. In the event of normal physiological development, diastemas with widths of less than 2 mm in nine-year-old children frequently close on their own. Although if they fail to close split Essix plates or finger springs on a detachable device, they can be used for closure. However, to control the angulations of the crown and roots in adults with broader diastemas, fixed appliances are required for correction. By using a range of alternative treatment procedures, including all-ceramic crowns, metal-ceramic crowns, porcelain laminate veneers, direct composite veneers, and indirect composite veneers, the diastema closure can be conservatively completed without the need for braces. It has become difficult for endodontists to meet the needs of young people who are used to expecting speedier aesthetic outcomes in a set amount of time. A composite resin buildup provides a solution for all of the patients' vivid needs during this crisis. Various prosthodontic rehabilitation, restorative, and orthodontic procedures and their derivative techniques are employed in dental practice for the closure of diastemas. The availability of diverse procedures and techniques in recent times has allowed the patient to achieve an aesthetically pleasing smile. In this paper, we aim to review the existing evidence from the literature for advances in diastema closure and tooth shape change.

A case report: Amelogenesis imperfecta

SUMMARY
 The aim of this case report is to come up with patient friendly restorative treatment for a young female patient with severe AI using indirect composite veneers for anteriors and metal crowns on posteriors. Amelogenesis imperfecta is defined as genetic determined malformation with various manifestations particularly concerning functional disability and enamel discoloration.
 After the performed dental procedure, patient improved a lot in terms of chewing efficacy, which in turn enhance her quality of life. Her confidence level was also boosted up with acceptable esthetics. The patient was better able to maintain her oral hygiene in terms of plaque removal and tooth brushing. Clinical Relevance: Patients with amelogenesis imperfect needs life time follow up with high level of maintenance provided with the prosthesis. This particular management provided the patient with least invasive procedure in terms of simplicity and cost effectiveness.
 The current case report exhibits that restorative treatment enhances the quality of life of patients. Some other aspects needs to be addressed depending upon the severity and affordability of patients, such as surgical correction of the jaws, and orthodontic treatment.

Comparison of Fracture Resistance and Failure Mode in Digitally Milled Restorations with Rapid Layering by Indirect Composite Resin: An In Vitro Study.

To evaluate the fracture resistance and failure mode of implant crowns made by polyether ether ketone (PEEK), zirconia, and chromium-cobalt frames, veneered by milled composite resin. Thirty-six implant analogs were mounted in acrylic blocks, and solid abutments were secured (n = 12). Single-unit frameworks were milled from PEEK, zirconia, or chromium-cobalt, and cemented to indirect composite veneers fabricated by the rapid layering technique. After thermal cycling, the fracture resistance test was performed at a speed of 0.5 mm/min, and the results were statistically analyzed by one-way analysis of variance (ANOVA) and Tukey post hoc test (P < .05). The failure mode was evaluated by a stereomicroscope ('L10). Veneer failure without damage to other components was considered desirable (repairable). The mean fracture resistances of PEEK, zirconia, and chromium-cobalt specimens were 2,037.24, 2,567.05, and 2,032.10 N, respectively. The Tukey post hoc test showed no significant difference between the PEEK and chromium-cobalt groups (P = .99); however, the difference was significant between zirconia and PEEK or chromium-cobalt specimens (P = .001). Failure mode was desirable in all chromium-cobalt (12 specimens), 9 zirconia, and 7 PEEK-based specimens. Zirconia-composite implant crowns had significantly higher fracture resistance. Given the range of maximum occlusal forces, all the specimens had clinically acceptable results. The failure mode was more desirable in chromium-cobalt, followed by zirconia-based crowns.

Load bearing capacity of minimal invasive direct and indirect veneers bonded to maxillary incisors with severe wear: effect of preparation design and material type

This study evaluated the load bearing capacity of direct and indirect veneers vs. full-coverage crowns and classified the failure types after fracture load. Sound human maxillary incisors (N = 108, n = 12 per group) were randomly divided into nine groups to receive one of the following restoration types: Group 1: Intact tooth, Group 2: Direct resin composite, Group 3: Lingual: Indirect composite veneer, Labial: Ceramic veneer, Lingual overlap: Ceramic, Group 4: Lingual: Indirect composite, Labial: Ceramic, Lingual overlap: Indirect composite, Group 5: Lingual: Direct composite, Labial: Ceramic, Group 6: Lingual: Ceramic, Labial: Ceramic, Group 7: Feldspathic ceramic crown, Group 8: Metal-ceramic Crown, Group 9: Lithium disilicate crown. Teeth were prepared simulating the erosion/wear conditions in each group. After cementing, the specimens were stored in distilled water at 37 °C for 2 months and then loaded to failure from the lingual surface at 105° inclination in the Universal Testing Machine (1 mm/min). Failure types were classified as irreparable or repairable. Data were analyzed using one-way ANOVA, Sheffe and Bonneferroni tests (α = 0.05). Mean fracture strength (N) of Groups 1, 4, 8, and 9 (558 ± 278 – 880 ± 319) were significantly higher than those of other groups (348 ± 101–421 ± 162) (p < 0.05). Lingual veneering with direct/indirect resin composite or ceramic did not significantly affect the results (p > 0.05) but lingual overlap with indirect composite increased the results (p < 0.05). Group 1, 2, 4 and 5 presented more repairable failures. Restoration of eroded teeth could best be achieved with direct composite veneer at the lingual and ceramic veneer on the labial surface.

A minimally invasive approach for aesthetic enhancement using indirect composite veneers: A case report

Introduction: Technique of composite veneers fabricated directly on a cast is easier and requires less clinical time and also the survival rates are statistically similar to ceramic veneers. Case Report: Composite veneers can be fabricated directly on a cast using the technique that have been described in this case report. Conclusion: Being inexpensive, less time consuming and having acceptable mechanical properties, indirect composite veneer is a good treatment option for discolored teeth.

The Effect of Different Adhesive Types and Curing Methods on Microleakage and the Marginal Adaptation of Composite Veneers

The aim of this in vitro study was to evaluate the influence of application techniques (with pre-curing vs without pre-curing) for dentin adhesive on microleakage and marginal adaptation of indirect composite veneer restorations. A total-etch bonding system, Excite/Variolink II (EXV), and a self-etching primer system, Panavia F2.0 (PF2), were used in the study. Forty-eight human central incisors were prepared for composite veneer restorations. The teeth were divided into two groups (n=24). For each resin cement, one half of each experimental group included an adhesive pre-cure (PC) with a halogen light source while the other half received no pre-cure (NPC) prior to resin cement insertion. Thus, four experimental groups were created: A (PC+EXV), B (NPC+EXV), C (PC+PF2), and D (NPC+PF2). Veneers made of Tetric Ceram resin composite were cemented using dual-cured resin luting agents. After storage in distilled water at 37 degrees C for 24 hours, the teeth were prepared for marginal leakage. Two samples of each group were selected at random for scanning electron microscopic (SEM) observation and evaluation of marginal adaptation at 1050x magnification. Data were analyzed using the Kruskal-Wallis and Mann-Whitney tests (a <0.05). The highest and lowest microleakage values were observed in dentinal margins of groups B and A, respectively. Dentin margins opposite to enamel margins had a significant difference in microleakage values of PC and NPC groups (P<0.05). The influence of the adhesive pre-cure was more pronounced than the type of resin cement used. No adhesive layer was visualized for the adhesives used without employing the pre-curing step. The effect of pre-cured adhesives was not material specific. The pre-cured adhesives showed the best resistance to dye penetration although the film thickness of these luting agents was only slightly increased. Different curing methods (with pre-curing/without pre-curing) regardless of total-etch or self-etch adhesive systems influenced microleakage and the marginal adaptation, especially dentin margins of indirect composite veneers.