PD003 Microleakage Study of a Restorative Resin Trough Radioisotopic Methods (original) (raw)
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Journal of dental problems and solutions, 2019
The aim of this randomized in vitro study is to clarify whether resin based restorative materials (RBRM) behave in a way comparable to non-resin based restorative materials (non-RBRM) in dentinelimited cavities with regard to their marginal fi t. For this purpose, cylindrical standardized cavities (diameter: 3.0 +/-0.1 mm, depth: 1.5 mm) were placed on buccal surfaces of sixty human molars and restored with three non-RBRM (glass ionomer cement, amalgam, phosphate cement) and three adhesive (composite, compomer, ormocer) restoratives. Aging of the samples was achieved by thermal cycling (500 cycles). The marginal gaps could be made visible with a dye penetration test (methylene blue 2%). Using a diamond internal hole saw, 5 cuts were made through the cavity and measured under an incident light microscope at 10x magnifi cation. The result of the statistical evaluation of the additionally determined percentage marginal gap depths was compared with the numerical evaluation of the penetration depths of 0, 1 and 2 required by the ISO test setup. The ISO classifi cation reveals statistical differences in the penetration behaviour of phosphate cement to the other materials, whereas the statistical evaluation of the percentage measurement distances revealed signifi cant differences between the nonadhesive and the adhesive restorative materials, with signifi cantly smaller marginal gaps for the cavities of the RBRM group.
Applied Sciences
Hybrid bioactive composite resins combine the benefits of glass ionomer cements with composite resins. Its self-adhesiveness is achieved through functional polyacrylic acids and carboxylic groups, hybridizing the smear layer and establishing ionic interactions between calcium and dentin. These materials are defined as having good aesthetics, moisture tolerance, durability, simplicity in technique and handling and are able to maintain a low microfiltration rate while releasing calcium, phosphate and fluorine. The aim of the present study was to evaluate microleakage in restorations using Surefill One™ bioactive resin. The null hypothesis is that this type of resin does not obtain a lower microleakage rate when compared to other materials. An in vitro study was carried out using thirty-six premolars and molars extracted for orthodontic reasons. Identical preparations were thus performed in all of them (Class V with 4 mm mesio-distal, 3 mm occluso-gingival and 3 mm in depth) and divide...
Analysis of microleakage of temporary restorative materials in primary teeth
Journal of Indian Society of Pedodontics and Preventive Dentistry, 2014
The aim of this study was to compare the coronal microleakage of restorative materials used between sessions of endodontic treatment in primary teeth. Materials and Methods: Forty healthy primary canines were chosen and randomly allocated to four groups: Group 1 -Cimpat Branco ® (n = 10), Group 2 -Bioplic ® (n = 10), Group 3 -Maxxion R ® glass ionomer cement (n = 10), and Group 4 (control) -Z350 ® composite resin (n = 10). Class V cavities were created and fi llings carried out following the manufacturer's instructions. The teeth were submitted to thermocycling, sealed, and immersed in 0.5% basic fuchsin solution for 24 h. The teeth were split along their long axis in the vestibulolingual direction and the toothrestorative material interface was photographed. The percentage of microleakage was calculated using the ImageJ program. Data were analyzed using the analysis of variance (ANOVA) F-test and Bonferroni's t-test, with a 5% level of signifi cance. Results: The following mean percentages of microleakage were found: Group 1 = 16.08%, Group 2 = 46.98%, Group 3 = 47.93%, and Group 4 = 11.03%. Statistically, signifi cant differences were found in the comparison of Groups 1 and 4 to Groups 2 and 3. Conclusion: Cimpat Branco ® had a lower percentage of microleakage in comparison to Bioplic ® and Maxxion R ® glass ionomer cement.
Microleakage study of a restorative material via radioisotope methods
Revista Portuguesa de Estomatologia, Medicina Dentária e Cirurgia Maxilofacial, 2014
Objectives: To validate the quantitative method used in the evaluation of microleakage and to evaluate the microleakage of dental restorations using GCP Fill. The null hypothesis was that the restorative system doesn't have any influence regarding microleakage.
Open Journal of Stomatology, 2012
is indicated for posterior restorations, with a single increment up to 5 mm due to reduced polymerization shrinkage, thus reducing working time. Aim: Evaluation of marginal microleakage with SonicFill TM . Method and Materials: There were sectioned sixty noncarious human molars in the occluso-cervical direction. Class V cavities were prepared on each tooth with gingival margin walls in a standardized way. The specimens were divided into 4 groups: group 1-restored with SonicFill TM (Kerr/Kavo), group 2-restored with Filtek TM SupremeXTE (3M ESPE), group 3-the cavities were not restored; group 4-restored with SonicFill TM (Kerr/Kavo). In groups 1, 2 and 4 the enamel was conditioned with 37% orthophosphoric acid and applied the self-etch adhesive system Clearfill TM SE BOND (Kuraray). The specimens were stored in distilled water at 37˚C for 7 days. After, the specimens, were immersed in a solution of 99m Tc-Pertechnetate and the radioactivity was assessed with a gamma camera. The nonparametric Kruskal-Wallis and Mann-Whitney test with Bonferroni correction at a significance level of 5% were used for the statistical analyses. Results: There are significant differences between the positive and negative control groups and between these and experimental groups (p < 0.05). There are no statistically significant differences between the specimens restored with SonicFill TM and Filtek TM SupremeXTE. Conclusion: The new composite SonicFill TM and Filtek TM SupremeXTE showed no difference concerning dye penetration. The Sonic-Fill TM restorative system showed no influence in concerning microleakage.
Egyptian Dental Journal, 2020
Aim: To evaluate the microleakage of three different restorative composite resins through gingival margins of proximal boxes by dye and bacterial penetration techniques. Materials and Methods: Class II slot cavities were prepared for sixty sound human premolar teeth. The teeth were divided into 3 main equal groups of 20 teeth each. Group I cavities were restored with Filtek Z250XT and considered as control ones while those of group II and III were restored with Sonic-filled Filtek Z250XT and Tetric EvoCeram Bulk Fill, respectively. At first, all teeth were undergone thermal cycling and then each group was subdivided into 2 subgroups of 10 teeth each; according to the microleakage technique used. Results: Monte-Carlo Statistical test showed that the three tested groups had no significant differences among them for the two techniques Conclusions: Sonic-fill technique had the least marginal leakage over the other techniques confirmed by both dye and bacterial leakage testing.
P836 Microleakage Study of an Experimental Restorative Material Trough Radioisotopes
International Dental Journal
Aim: The purpose of this study was to evaluate the microleakage of the dental restorations using GCP Fill. The null hypothesis wast hat the type restorative system didn’t have influence in what concerns to microleakage. Methods: Sixty non carious extracted human molars were cut in two equal halves occlusogingivally and Class 5 cavities were pre-pared on the buccal or lingual surfaces of each tooth. The specimens were divided randomly in four groups. Two were restored with GCP Fill, while another was restored with FiltekTM Supreme(3M ESPE). The control group wasn’t restored. The specimens were stored in distilled water at 37°C for 7 days and after thermo-cycling 500 cycles between 5 and 55°C with a dwell time of 30 s.The specimens were submersed in a solution of 99mTc-Pertechnetate during 3 h, being the radioactivity then counted. Results: In order to choose the adequate statistical test both group results were compared. There was not found homogeneity of variances and the Kruskal–Wa...
Introduction: The composite SonicFill TM (Kerr/Kavo) is indicated for posterior restorations, with a single increment up to 5 mm due to reduced polymerization shrinkage, thus reducing working time. Aim: Evaluation of marginal microleakage with SonicFill TM. Method and Materials: There were sectioned sixty noncarious human molars in the occluso-cervical direction. Class V cavities were prepared on each tooth with gingival margin walls in a standardized way. The specimens were divided into 4 groups: group 1—restored with SonicFill TM (Kerr/Kavo), group 2—restored with Filtek TM SupremeXTE (3M ESPE), group 3—the cavities were not restored; group 4—restored with SonicFill TM (Kerr/Kavo). In groups 1, 2 and 4 the enamel was conditioned with 37% orthophosphoric acid and applied the self-etch adhesive system Clear-fill TM SE BOND (Kuraray). The specimens were stored in distilled water at 37˚C for 7 days. After, the specimens, were immersed in a solution of 99m Tc-Pertechnetate and the radioactivity was assessed with a gamma camera. The nonparametric Kruskal-Wallis and Mann-Whitney test with Bonferroni correction at a significance level of 5% were used for the statistical analyses. Results: There are significant differences between the positive and negative control groups and between these and experimental groups (p < 0.05). There are no statistically significant differences between the specimens restored with SonicFill TM and Filtek TM SupremeXTE. Conclusion: The new composite SonicFill TM and Filtek TM SupremeXTE showed no difference concerning dye penetration. The Sonic-Fill TM restorative system showed no influence in concerning microleakage.
Comparative Evaluation of Microleakage in Different Restorative Materials an Invitro Study
Zenodo (CERN European Organization for Nuclear Research), 2022
Introduction: Microleakage is one of the most frequent cause behind a restoration failure. Numerous advancements in restorative materials and placement techniques have been made to overcome this problem. Aim And Objectives: The purpose of this study is to evaluate the microleakage of three different restorative materials with different chemical structure and to determine which among the three has more sealing ability. Materials And Methods: Thirtyextracted mandibular 3 rd molars were stored in distilled water and standardized class 1 cavity preparation was done. All the 30 samples were divided into 3 experimental groups GROUP I (GIC), GROUP II (ORMOCER), GROUP III (CENTION N) 10 sample in each group. Teeth were buccolingually sectioned in two halves and immersed in 2% basic fuschin dye and micro leakage was assessed under stereomicroscope. Results: IN our invitro study the highest microleakage was observed in GIC (1.5±0.849) followed by Cention n (0.7± 0.6749) and Ormocer (0.3± 0.483) respectively.Significant difference was observed in group I and group II with p value of 0.0005. Conclusion: Better sealing ability were observed in Ormocer>Cention-n>GIC.
IP Innovative Publication Pvt. Ltd., 2017
Aim: The objective of this study was to compare the micro leakage in Class I cavity preparations restored with different tooth colored materials. Materials and Method: Standardized Class I cavity were made in 30 human premolar teeth. Specimens were randomly divided into four groups comprising of 10 samples each (n=10). Group I: Teeth were without any restorative material (Control). Group II: Restored with a nano ionomer, Group III: Restored with a silorane composite, Group IV: Restored with SDR. All specimens were immersed in 2% methylene blue dye. The specimens were sectioned and evaluated for microleakage under stereomicroscope. Results: Group IV (SDR) showed lesser microleakage than P90 followed by Ketac N100. Conclusion: It was concluded that SDR (Smart Dentin Replacement) had the lowest level of micro leakage amongst all the groups.