dr.Ahmed Goda - Academia.edu (original) (raw)

Papers by dr.Ahmed Goda

Research paper thumbnail of Effect of two desensitizing agents on post-operative hypersensitivity of composite resin restorations

International journal of health sciences

Post-operative hypersensitivity still occurs although the improvements in adhesive systems and th... more Post-operative hypersensitivity still occurs although the improvements in adhesive systems and their techniques, so the current study was conducted to evaluate the efficacy of two desensitizing systems. Materials and methods: A total No. of 48 patients were randomly divided into 3 groups (n=16); Gluma group, SAD group, and control group. Class I cavity preparation and self-etch bonding technique was used by Universal bonding system in the control group, before that desensitizing agent was applied in the two desensitizing tested groups, light cured and composite placement incrementally (Tetric N-ceram) and light cured, finishing, and polishing of composite restorations, then VAS system was used to record post-operative hypersensitivity by patients, and after 1 day,1 week and 1 month the data collected and statistically analyzed. Results: Total number of patients who suffered from post-operative hypersensitivity was 15 patients (31.25 %) after one day of treatment, the total number d...

Research paper thumbnail of Research Article The Effect of Different Disinfecting Agents on Bond Strength of Resin Composites

Attribution License, which permits unrestricted use, distribution, and reproduction in any medium... more Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 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 (

Research paper thumbnail of An in vivo study on the durability of resin infiltration technique on color masking of white spot lesions

Al-Azhar Journal of Dental Science

Research paper thumbnail of An in vivo study on the clinical efficacy of resin infiltration technique on treatment of white spot lesions

Al-Azhar Journal of Dental Science

The caries infiltration technique was introduced with the aim of filling the intercrystalline spa... more The caries infiltration technique was introduced with the aim of filling the intercrystalline spaces with a low-viscosity resin, to arrest lesions and treat the esthetic problem of white spot lesions. This study was designed to evaluate the effect and clinical efficacy of resin infiltration technique on masking of enamel white spot lesions compared to an ordinary adhesive system. Methods: A total number of 20 patients having 120 not cavitated anterior teeth with white spot lesions were subjected to this study. After scaling, polishing and oral hygiene measures, the six maxillary anterior teeth were isolated with rubber dam. The teeth were divided into two groups, the first group (central incisor, lateral incisor and canine on right side of patient) was treated with hydrochloric acid (Icon-Etch) then ethanol (Icon-Dry) followed with application of resin (Icon-Infiltrant), while the second group: (central incisor, lateral incisor and canine on left side of the same patient) was treated with phosphoric acid (N-Etch) and adhesive (ExciTE F).Durability of used resins were clinically assessed by six of the FDI World Dental Federation criteria which were selected to be suitable for the current study (Surface luster, Surface Staining, Postoperative hyper-sensitivity, Recurrence of caries, Adjacent mucosa, and Patient's view), Each property has five grades from excellent to poor. Results: Both of treated groups showed improved surface luster, decreased postoperative hypersensitivity, diminished recurrent caries and increased patient satisfaction. Icon resin infiltration was more durable than Excite F adhesive after one year follow up. Both groups showed no initial surface staining, but with timesurface stainingbeing more with icon infiltrated group. Both materials have no effect on adjacent mucosa at different aging times. Conclusions: Icon resin infiltration is an effective treatment for deminiralized white spot lesions but with frequent repolishing to overcome surface staining for long lasting esthetic outcome. Excite F adhesive can be used only for short time sealing of enamel surface to improve the esthetics of white spot lesions and control of caries progression.

Research paper thumbnail of The effect of different disinfecting agents on bond strength of resin composites

International journal of dentistry, 2014

Objective. The aim of this study was to evaluate the effect of different disinfectant agents on b... more 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 by t-test and one-way ANOVA followed by Tukey's post hoc test. Results. It was found that dentin treated with EDTA recorded the highest shear bond strength values followed by sodium hypochlorite and then chlorhexidine grou...

Research paper thumbnail of Efficacy of Bulk Fill Flowable Composite Reinforced with Short Fibers in Fracture Resistance of Restored Extensive Premolars Cavities

Al-Azhar Assiut Dental Journal

Objectives: Tooth fracture is a common complication following MOD restorations. This study sought... more Objectives: Tooth fracture is a common complication following MOD restorations. This study sought to assess the effect of bulk fill flowable composite reinforced with short fibers on fracture resistance of maxillary premolar teeth that have extensively restored MOD cavities. Materials and Methods: In this invitro experimental study, 60 human maxillary sound premolar teeth were chosen and stored in chloramine solution. The teeth were then mounted into acrylic blocks 1mm below the CEJ. The teeth were randomly divided into 4 groups of 15 each. Group A, Teeth were intact without any cavity (negative control). Wide MOD cavities were prepared using cylindrical bur with high-speed handpiece for the 3 other groups. Group B, the teeth with MOD cavities without any restoration (positive control); Group C, the teeth were restored with bulkfill flowable composite Tetric N flow bulk fill (Ivoclar Vivadent); and group D, the teeth were restored with short fibers reinforced bulkfill flowable composite ever X Flow(GC). The teeth were then stored in water at 37°C for 24h and their fracture resistance was assessed using (INSTRON). The load at fracture was recorded in N, fracture mode was observed. Data were analyzed using one-way ANOVA and Tukey's test with 95% CI. Results: The mean fracture strength was 1216 ± 352 N in group A, 330 ± 201 N in group B, 1013 ± 389 N in group C and 1019 ± 164 N in group D. Conclusion: Extensive MOD cavities restored with bulk fill flowable composite having short fiber reinforcement, increased the fracture strength of teeth against compressive forces, with no difference than did the other bulk fill flowable composite. Large direct restorations present several challenges especially in the posterior dentition. Mastering of shape, contours, occlusal anatomy and function requires particular skills. One must be aware of the KEYWORDS

Research paper thumbnail of Effect of two desensitizing agents on post-operative hypersensitivity of composite resin restorations

International journal of health sciences

Post-operative hypersensitivity still occurs although the improvements in adhesive systems and th... more Post-operative hypersensitivity still occurs although the improvements in adhesive systems and their techniques, so the current study was conducted to evaluate the efficacy of two desensitizing systems. Materials and methods: A total No. of 48 patients were randomly divided into 3 groups (n=16); Gluma group, SAD group, and control group. Class I cavity preparation and self-etch bonding technique was used by Universal bonding system in the control group, before that desensitizing agent was applied in the two desensitizing tested groups, light cured and composite placement incrementally (Tetric N-ceram) and light cured, finishing, and polishing of composite restorations, then VAS system was used to record post-operative hypersensitivity by patients, and after 1 day,1 week and 1 month the data collected and statistically analyzed. Results: Total number of patients who suffered from post-operative hypersensitivity was 15 patients (31.25 %) after one day of treatment, the total number d...

Research paper thumbnail of Research Article The Effect of Different Disinfecting Agents on Bond Strength of Resin Composites

Attribution License, which permits unrestricted use, distribution, and reproduction in any medium... more Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 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 (

Research paper thumbnail of An in vivo study on the durability of resin infiltration technique on color masking of white spot lesions

Al-Azhar Journal of Dental Science

Research paper thumbnail of An in vivo study on the clinical efficacy of resin infiltration technique on treatment of white spot lesions

Al-Azhar Journal of Dental Science

The caries infiltration technique was introduced with the aim of filling the intercrystalline spa... more The caries infiltration technique was introduced with the aim of filling the intercrystalline spaces with a low-viscosity resin, to arrest lesions and treat the esthetic problem of white spot lesions. This study was designed to evaluate the effect and clinical efficacy of resin infiltration technique on masking of enamel white spot lesions compared to an ordinary adhesive system. Methods: A total number of 20 patients having 120 not cavitated anterior teeth with white spot lesions were subjected to this study. After scaling, polishing and oral hygiene measures, the six maxillary anterior teeth were isolated with rubber dam. The teeth were divided into two groups, the first group (central incisor, lateral incisor and canine on right side of patient) was treated with hydrochloric acid (Icon-Etch) then ethanol (Icon-Dry) followed with application of resin (Icon-Infiltrant), while the second group: (central incisor, lateral incisor and canine on left side of the same patient) was treated with phosphoric acid (N-Etch) and adhesive (ExciTE F).Durability of used resins were clinically assessed by six of the FDI World Dental Federation criteria which were selected to be suitable for the current study (Surface luster, Surface Staining, Postoperative hyper-sensitivity, Recurrence of caries, Adjacent mucosa, and Patient's view), Each property has five grades from excellent to poor. Results: Both of treated groups showed improved surface luster, decreased postoperative hypersensitivity, diminished recurrent caries and increased patient satisfaction. Icon resin infiltration was more durable than Excite F adhesive after one year follow up. Both groups showed no initial surface staining, but with timesurface stainingbeing more with icon infiltrated group. Both materials have no effect on adjacent mucosa at different aging times. Conclusions: Icon resin infiltration is an effective treatment for deminiralized white spot lesions but with frequent repolishing to overcome surface staining for long lasting esthetic outcome. Excite F adhesive can be used only for short time sealing of enamel surface to improve the esthetics of white spot lesions and control of caries progression.

Research paper thumbnail of The effect of different disinfecting agents on bond strength of resin composites

International journal of dentistry, 2014

Objective. The aim of this study was to evaluate the effect of different disinfectant agents on b... more 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 by t-test and one-way ANOVA followed by Tukey's post hoc test. Results. It was found that dentin treated with EDTA recorded the highest shear bond strength values followed by sodium hypochlorite and then chlorhexidine grou...

Research paper thumbnail of Efficacy of Bulk Fill Flowable Composite Reinforced with Short Fibers in Fracture Resistance of Restored Extensive Premolars Cavities

Al-Azhar Assiut Dental Journal

Objectives: Tooth fracture is a common complication following MOD restorations. This study sought... more Objectives: Tooth fracture is a common complication following MOD restorations. This study sought to assess the effect of bulk fill flowable composite reinforced with short fibers on fracture resistance of maxillary premolar teeth that have extensively restored MOD cavities. Materials and Methods: In this invitro experimental study, 60 human maxillary sound premolar teeth were chosen and stored in chloramine solution. The teeth were then mounted into acrylic blocks 1mm below the CEJ. The teeth were randomly divided into 4 groups of 15 each. Group A, Teeth were intact without any cavity (negative control). Wide MOD cavities were prepared using cylindrical bur with high-speed handpiece for the 3 other groups. Group B, the teeth with MOD cavities without any restoration (positive control); Group C, the teeth were restored with bulkfill flowable composite Tetric N flow bulk fill (Ivoclar Vivadent); and group D, the teeth were restored with short fibers reinforced bulkfill flowable composite ever X Flow(GC). The teeth were then stored in water at 37°C for 24h and their fracture resistance was assessed using (INSTRON). The load at fracture was recorded in N, fracture mode was observed. Data were analyzed using one-way ANOVA and Tukey's test with 95% CI. Results: The mean fracture strength was 1216 ± 352 N in group A, 330 ± 201 N in group B, 1013 ± 389 N in group C and 1019 ± 164 N in group D. Conclusion: Extensive MOD cavities restored with bulk fill flowable composite having short fiber reinforcement, increased the fracture strength of teeth against compressive forces, with no difference than did the other bulk fill flowable composite. Large direct restorations present several challenges especially in the posterior dentition. Mastering of shape, contours, occlusal anatomy and function requires particular skills. One must be aware of the KEYWORDS