scholarly journals Effect of different restoration techniques and cavity designs on cuspal deflection of posterior teeth restored with resin composite inlays

2018 ◽  
Vol 4 (2) ◽  
pp. 146-149
Author(s):  
Haidy N. Salem ◽  
Sherif H. Elhefnawy ◽  
Lamiaa M. Moharam
Keyword(s):  
Resin Composite ◽  
Posterior Teeth ◽  
Restoration Techniques ◽  
Composite Inlays

scholarly journals A Simple Technique to Fabricate Bite Turbos

2021 ◽  
pp. 030157422110137
Author(s):  
Hoger Omran Alsheikho ◽  
Doaa Jomah
Keyword(s):  
Simple Technique ◽  
Resin Composite ◽  
Dental Practice ◽  
Posterior Teeth ◽  
Laboratory Procedures

Bite turbos are a relatively new but widespread fabrication used in a variety of orthodontic cases. Bite turbos placed on lingual surfaces of upper incisors help disclude the posterior teeth and open the bite. This report describes a simple, effective, and economical technique to fabricate resin composite bite turbos. This method does not require laboratory procedures and can be manufactured using materials that are usually available in a regular dental practice.

scholarly journals The Effect of Different Disinfecting Agents on Bond Strength of Resin Composites

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Ahmed Mohammed Hassan ◽  
Ahmed Ali Goda ◽  
Kusai Baroudi
Keyword(s):  
Bond Strength ◽  
Sodium Hypochlorite ◽  
Shear Bond Strength ◽  
Resin Composite ◽  
Testing Machine ◽  
Control Group ◽  
Posterior Teeth ◽  
Surface Pretreatment ◽  
Dentin Surface ◽  
Post Hoc

Objective. The aim of this study was to evaluate the effect of different disinfectant agents on bond strength of two types of resin composite materials.Methods. A total of 80 sound posterior teeth were used. They were divided into four groups(n=20)according to the dentin surface pretreatment (no treatment, chlorhexidine gluconate 2%, sodium hypochlorite 4%, and EDTA 19%). Each group was divided into two subgroups according to the type of adhesive (prime and bond 2.1 and Adper easy one). Each subgroup was further divided into two subgroups according to the type of resin composite (TPH spectrum and Tetric EvoCeram). Shear bond strength between dentin and resin composite was measured using Universal Testing Machine. Data collected were statistically analyzed byt-test and one-way ANOVA followed by Tukey’spost hoctest.Results. It was found that dentin treated with EDTA recorded the highest shear bond strength values followed by sodium hypochlorite and then chlorhexidine groups while the control group showed the lowest shear bond strength.Conclusions. The surface treatment of dentin before bonding application has a great effect on shear bond strength between resin composite and dentin surface.

scholarly journals Amalgam versus resin composite for the restoration of posterior teeth: disparities between public clinical practice and dental education in southern Brazil

2011 ◽  
Vol 52 (1/3) ◽  
pp. 33-37
Author(s):  
Clarissa Fatturi Parolo ◽  
Aline Macarevich ◽  
Juliana Jobim Jardim ◽  
Marisa Maltz
Keyword(s):  
Public Health ◽  
Health System ◽  
Public Health System ◽  
Resin Composite ◽  
Dental Students ◽  
Restorative Material ◽  
Chi Square ◽  
Posterior Teeth ◽  
The Public ◽  
Dental Schools

Purpose: To compare the restorative material used in the treatment of posterior teeth taught and performed in two Dental Schools (UFRGS and ULBRA) and in 8 basic health units (BHU) from the Public Health System in Porto Alegre, Brazil. Materials and methods: Data referring the teaching of restorative procedures using amalgam (AM) or resin (R) were obtained through the analysis of patient’s files and questionnaires applied to final year dental students. Information regarding restorative procedures at BHU was obtained through patient’s records and a questionnaire applied to the dentists. The type of restorative material used in both BHU and Dental Schools were compared by chi-square test. Results: At UFRGS, 327 restorations were performed, 78.28% R and 21.72% AM, and at ULBRA 366 restorations, 92.63% R and 7.37% AM. At BHU, 1664 restorations were performed (35.93% R and 64.07% AM). A major proportion of AM restorations was performed in the Public Health Service in comparison to both Dental Schools, in which resin restorations prevailed (p=0.000). Conclusion: The change from AM to R in the dental material choice for posterior teeth at Dental Schools was not followed by the Public Health System, where the AM is still widely used in posterior teeth.

scholarly journals Interfacial microscopic examination and chemical analysis of resin-dentin interface of self-adhering flowable resin composite

F1000Research ◽  
2017 ◽  
Vol 6 ◽  
pp. 1688
Author(s):  
Tamer M. Hamdy
Keyword(s):  
Chemical Analysis ◽  
Microscopic Examination ◽  
Resin Composite ◽  
Bonding Agent ◽  
Single Bond ◽  
Silver Particles ◽  
Marginal Gap ◽  
Posterior Teeth ◽  
Mean Values ◽  
Vertise Flow

Background: The newly introduced self-adhering flowable resin-composites decrease the required time for application by incorporation of an acidic adhesive monomer, thus reducing the number of the steps, but its bonding is still uncertain. The aim of this study was to evaluate the interfacial microscopic examination and chemical analysis at the resin-dentin interface of a self-adhering flowable resin composite (Vertise-Flow) versus a total-etch (Te-Econom Plus) resin composite, using an etching agent (Eco-Etch gel) and  bonding agent (Single Bond Universal). Methods: Sixteen freshly extracted sound human posterior teeth were used. The teeth were randomly divided into two groups: 8 specimens per type of composite. Standard-shaped class V cavities were prepared on the buccal surface. One group was restored by Te-Econom Plus resin composite by total-etch technique using Eco-Etch gel, which was applied to dentine for 15 seconds, followed by rinsing, drying and bonding agent application (Single Bond Universal). The other group restored directly with self-adhering resin composite (Vertise-Flow) without application of etch or bond. Curing was done for 20 seconds using a light emitting diode light curing unit. Evaluation of the resin-dentin interface was done microscopically by examination of marginal gap distance in μm using scanning electron microscope (SEM), and chemical analysis of silver particles was observed using SEM with energy-dispersive X-ray spectrometry after 24 hours of specimen storage in ammoniacal silver nitrate. Results: Regarding marginal gap distance (µm) and silver atomic % mean values, teeth restored with self-adhering resin composite (Vertise-Flow) showed significantly higher mean values than the multi-step etch and rinse resin composite group (5.2 vs 0; 12.2 vs 8.2, respectively). Conclusions: Resin-dentin bonding using total-etch resin composite technique was more effective than self-adhering flowable resin composite (Vertise-Flow) regarding marginal gap formation and penetration of silver particles. Further studies for bond strength could be performed.

scholarly journals Effect of fiber-premixed indirect resin composite substructure on fracture resistance of MOD composite inlays adhered with two different adhesive resin cements

2009 ◽  
Vol 28 (5) ◽  
pp. 565-570 ◽  
Author(s):  
Hiroyuki MINAMI ◽  
Shiro SUZUKI ◽  
Sadaaki MURAHARA ◽  
Yasukazu SAIMI ◽  
Yoshito MINESAKI ◽  
...  
Keyword(s):  
Fracture Resistance ◽  
Resin Composite ◽  
Resin Cements ◽  
Adhesive Resin ◽  
Composite Inlays

Bonding Interaction and Shrinkage Stress of Low-viscosity Bulk Fill Resin Composites With High-viscosity Bulk Fill or Conventional Resin Composites

2019 ◽  
Vol 44 (6) ◽  
pp. 625-636 ◽  
Author(s):  
ER Cerda-Rizo ◽  
M de Paula Rodrigues ◽  
ABF Vilela ◽  
SSL Braga ◽  
LRS Oliveira ◽  
...  
Keyword(s):  
Failure Mode ◽  
Resin Composite ◽  
High Viscosity ◽  
Shrinkage Stress ◽  
Resin Composites ◽  
Posterior Teeth ◽  
Low Viscosity ◽  
Bonding Interaction ◽  
Significant Difference ◽  
Chi Square Analysis

SUMMARY Objective: To analyze the shrinkage stress, bonding interaction, and failure modes between different low-viscosity bulk fill resin composites and conventional resin composites produced by the same manufacturer or a high-viscosity bulk fill resin composite used to restore the occlusal layer in posterior teeth. Methods & Materials: Three low-viscosity bulk fill resin composites were associated with the conventional resin composites made by the same manufacturers or with a high-viscosity bulk fill resin composite, resulting in six groups (n=10). The bonding interaction between resin composites was tested by assessing the microshear bond strength (μSBS). The samples were thermocycled and were tested with 1-mm/min crosshead speed, and the failure mode was evaluated. The post-gel shrinkage (Shr) of all the resin composites was measured using a strain gauge (n=10). The modulus of elasticity (E) and the hardness (KHN) were measured using the Knoop hardness test. Two-dimensional finite element models were created for analyzing the stress caused by shrinkage and contact loading. The μSBS, Shr, E, and KHN data were analyzed using the Student t-test and one-way analysis of variance. The failure mode data were subjected to chi-square analysis (α=0.05). The stress distribution was analyzed qualitatively. Results: No significant difference was verified for μSBS between low-viscosity bulk fill resin composites and conventional or high-viscosity bulk fill composites in terms of restoring the occlusal layer (p=0.349). Cohesive failure of the low-viscosity bulk fill resin composites was the most frequent failure mode. The Shr, E, and KHN varied between low-viscosity and high-viscosity resin composites. The use of high-viscosity bulk fill resin composites on the occlusal layer reduced the stress at the enamel interface on the occlusal surface. Conclusions: The use of high-viscosity bulk fill resin composites as an occlusal layer for low-viscosity bulk fill resin composites to restore the posterior teeth can be a viable alternative, as it shows a similar bonding interaction to conventional resin composites as well as lower shrinkage stress at the enamel margin.

Survival rates of resin composite restorations in loadbearing situations in posterior teeth

Dental Update ◽  
2019 ◽  
Vol 46 (6) ◽  
pp. 524-536 ◽  
Author(s):  
F J Trevor Burke ◽  
Louis Mackenzie ◽  
Adrian CC Shortall
Keyword(s):  
Cohort Studies ◽  
Systematic Reviews ◽  
Clinical Relevance ◽  
Resin Composite ◽  
Survival Rates ◽  
Inclusion Criteria ◽  
Posterior Teeth ◽  
Medline Search ◽  
Composite Restorations ◽  
Amalgam Restorations

The use of resin composite for routine restoration of cavities in posterior teeth is now commonplace, and will increase further following the Minamata Agreement and patient requests for tooth-coloured restorations in their posterior teeth. It is therefore relevant to evaluate the published survival rates of such restorations. A Medline search identified 144 possible studies, this being reduced to 24 when inclusion criteria were introduced. Of these, ten directly compared amalgam and composite, eight were cohort studies, and six were systematic reviews. It was concluded that posterior composites may provide restorations of satisfactory longevity and with survival rates generally similar to those published on amalgam restorations. However, the ability of the operator in placing the restoration may have a profound effect. CPD/Clinical Relevance: With the increasing use of composite for restorations in posterior teeth, it is relevant to note that these may provide good rates for survival.

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