Reza Molla - Academia.edu (original) (raw)
Papers by Reza Molla
Introduction: Periodontitis is an inflammatory disease, for which, scaling and root planning (SRP... more Introduction: Periodontitis is an inflammatory disease, for which, scaling and root planning (SRP) is the common approach for non-surgical control of inflammation. Using lasers is another approach in the first phase of periodontal treatment for control of inflammation. Diode laser has some beneficial effects such as acceleration of wound healing, promotion of angiogenesis and augmentation of growth factor release. Thus the aim of this study is the evaluation of diode
Introduction: In periodontal pockets, the exposed root surfaces are contaminated with an accumula... more Introduction: In periodontal pockets, the exposed root surfaces are contaminated with an accumulation of plaque and calculus. Usually, in the initial phase of periodontal therapy, debridement of the diseased root surface is non surgically. However, complete removal of plaque and calculus is not always achieved with only the use of conventional mechanical therapy. The outcome of other studies showed that adding diode laser therapy to the initial phase of periodontal therapy significantly improved treatment results. The aim of this study was the evaluation of the effects of diode (980 nm) laser on clinical periodontal parameters after nonsurgical periodontal therapy. Methods: Twenty-one patients with moderate to severe chronic periodontitis (11 men and 10 female with mean age of 42.2) were selected and divided into the control group (SRP) and test group (SRP + laser). Two months after the last scaling and laser radiation, clinical parameters were recorded and compared with baseline. This clinical trial study was in splint mouth design which was done on randomized selection in two quadrant (Maxilla and Mandible) in test group. the data were entered in computer and analysed bying SPSS 16 and Mannywhitny and Wilcoxon test. Results: After two months, clinical parameters improved in both groups. There were statically significant difference between two groups in PI and PD (0-3) mm, however in CAL and PPD (3-5) mm, (>5) mm no statically significant difference were seen. Conclusion: According to an overall improvement in clinical parameters, usage laser as an adjunctive treatment besides common methods could be suggested.
Journal of lasers in medical sciences, 2012
Introduction: Thermal changes in laser assisted root canal therapy with the use of diode laser ca... more Introduction: Thermal changes in laser assisted root canal therapy with the use of diode laser can predispose tooth structure to the fracture. This study evaluated the changes in flexural strength of dentin blocks after diode laser irradiations (810 nm). Methods: A total of 60 dentinal blocks were prepared from freshly extracted teeth in three different thicknesses (300, 500 and 1000µm) and 20 sections in each of these thicknesses were divided randomly to the test and control groups. Samples in the test groups were irradiated at 2W power setting by scanning movement of 2mm/s of diode laser, and the controls were stored in normal saline. The flexural strength of samples was evaluated by UTM (Universal Testing Machine). Data analysis was done with the SPSS Software 11.5. Results: Samples of 300µ had the lowest flexural strength (mean: 71/65 mpa) followed by 500 (116.64 mpa) and 1000µ (217.56 mpa). Statistical analyses showed that after laser irradiation, the flextural strength in the ...
Journal of lasers in medical sciences, 2014
INTRODUCTION Periodontitis is an inflammatory disease, for which, scaling and root planning(SRP) ... more INTRODUCTION Periodontitis is an inflammatory disease, for which, scaling and root planning(SRP) is the common approach for non-surgical control of inflammation. Using lasers is anotherapproach in the first phase of periodontal treatment for control of inflammation. Diode laserhas some beneficial effects such as acceleration of wound healing, promotion of angiogenesisand augmentation of growth factor release. Thus the aim of this study is the evaluation of diodelaser (980 nm) effect on gingival inflammation when it is used between the first and secondphase of periodontal treatment, in comparison with common treatment (SRP) modality alone. METHODS In this study, 21 patients with moderate to severe chronic periodontitis were selectedand divided in to control group (SRP) and test group (SRP + laser). Two months after the lastscaling and laser radiation, indexes including gingival level (GL), bleeding on probing (BOP)and modified gingival index (MGI) were recorded and compared with base...
Objective: The effects of magnetostrictive ultrasonic instruments and piezoelectric instrument on... more Objective: The effects of magnetostrictive ultrasonic instruments and piezoelectric instrument on tooth surfaces seem to differ considering remaining calculus & root surface roughness. The purpose of this study was to compare a magnetostrictive ultrasonic scaler instrument with a piezoelectric ultrasonic scaler. Methods: 40 human teeth were assigned to two treatment groups (n=20). Teeth were scaled and data related to the duration of scaling and effectiveness of instrument in calculus removal and the amount of surface roughness were collected and statistically analyzed by paired samples T- test. Results: the results revealed that the mean of time needed for instrumentation in piezoelectric and magnetostrictive ultrasonic instruments was 216 ± 52.05 s and 274.5 ± 87.74 s respectively. There was no statistically significant difference between two ultrasonic instruments considering cululus removal. Furthermore, our study showed that Magnetostrictive instrument left more smooth surface ...
Journal of periodontal & implant science
The effects of magnetostrictive and piezoelectric devices on tooth surfaces seem to differ with r... more The effects of magnetostrictive and piezoelectric devices on tooth surfaces seem to differ with regard to the root surface roughness they produce. This study aimed to compare the results of scaling using magnetostrictive and piezoelectric devices on extracted teeth. Forty-four human extracted teeth were assigned to four study groups (n=11). In two groups (C100 and C200), the teeth were scaled using a magnetostrictive device and two different lateral forces: 100 g and 200 g, respectively. In the other two groups (P100 and P200), the teeth were scaled with a piezoelectric device with 100 g and 200 g of lateral force, respectively. he teeth were scaled and the data on the duration of scaling and the amount of surface were collected and analyzed using the t-test. The mean time needed for instrumentation for the piezoelectric and magnetostrictive devices was 50:54 and 41:10, respectively, but their difference was not statistically significant (P=0.171). For root surface roughness, we onl...
Introduction: Periodontitis is an inflammatory disease, for which, scaling and root planning (SRP... more Introduction: Periodontitis is an inflammatory disease, for which, scaling and root planning (SRP) is the common approach for non-surgical control of inflammation. Using lasers is another approach in the first phase of periodontal treatment for control of inflammation. Diode laser has some beneficial effects such as acceleration of wound healing, promotion of angiogenesis and augmentation of growth factor release. Thus the aim of this study is the evaluation of diode
Introduction: In periodontal pockets, the exposed root surfaces are contaminated with an accumula... more Introduction: In periodontal pockets, the exposed root surfaces are contaminated with an accumulation of plaque and calculus. Usually, in the initial phase of periodontal therapy, debridement of the diseased root surface is non surgically. However, complete removal of plaque and calculus is not always achieved with only the use of conventional mechanical therapy. The outcome of other studies showed that adding diode laser therapy to the initial phase of periodontal therapy significantly improved treatment results. The aim of this study was the evaluation of the effects of diode (980 nm) laser on clinical periodontal parameters after nonsurgical periodontal therapy. Methods: Twenty-one patients with moderate to severe chronic periodontitis (11 men and 10 female with mean age of 42.2) were selected and divided into the control group (SRP) and test group (SRP + laser). Two months after the last scaling and laser radiation, clinical parameters were recorded and compared with baseline. This clinical trial study was in splint mouth design which was done on randomized selection in two quadrant (Maxilla and Mandible) in test group. the data were entered in computer and analysed bying SPSS 16 and Mannywhitny and Wilcoxon test. Results: After two months, clinical parameters improved in both groups. There were statically significant difference between two groups in PI and PD (0-3) mm, however in CAL and PPD (3-5) mm, (>5) mm no statically significant difference were seen. Conclusion: According to an overall improvement in clinical parameters, usage laser as an adjunctive treatment besides common methods could be suggested.
Journal of lasers in medical sciences, 2012
Introduction: Thermal changes in laser assisted root canal therapy with the use of diode laser ca... more Introduction: Thermal changes in laser assisted root canal therapy with the use of diode laser can predispose tooth structure to the fracture. This study evaluated the changes in flexural strength of dentin blocks after diode laser irradiations (810 nm). Methods: A total of 60 dentinal blocks were prepared from freshly extracted teeth in three different thicknesses (300, 500 and 1000µm) and 20 sections in each of these thicknesses were divided randomly to the test and control groups. Samples in the test groups were irradiated at 2W power setting by scanning movement of 2mm/s of diode laser, and the controls were stored in normal saline. The flexural strength of samples was evaluated by UTM (Universal Testing Machine). Data analysis was done with the SPSS Software 11.5. Results: Samples of 300µ had the lowest flexural strength (mean: 71/65 mpa) followed by 500 (116.64 mpa) and 1000µ (217.56 mpa). Statistical analyses showed that after laser irradiation, the flextural strength in the ...
Journal of lasers in medical sciences, 2014
INTRODUCTION Periodontitis is an inflammatory disease, for which, scaling and root planning(SRP) ... more INTRODUCTION Periodontitis is an inflammatory disease, for which, scaling and root planning(SRP) is the common approach for non-surgical control of inflammation. Using lasers is anotherapproach in the first phase of periodontal treatment for control of inflammation. Diode laserhas some beneficial effects such as acceleration of wound healing, promotion of angiogenesisand augmentation of growth factor release. Thus the aim of this study is the evaluation of diodelaser (980 nm) effect on gingival inflammation when it is used between the first and secondphase of periodontal treatment, in comparison with common treatment (SRP) modality alone. METHODS In this study, 21 patients with moderate to severe chronic periodontitis were selectedand divided in to control group (SRP) and test group (SRP + laser). Two months after the lastscaling and laser radiation, indexes including gingival level (GL), bleeding on probing (BOP)and modified gingival index (MGI) were recorded and compared with base...
Objective: The effects of magnetostrictive ultrasonic instruments and piezoelectric instrument on... more Objective: The effects of magnetostrictive ultrasonic instruments and piezoelectric instrument on tooth surfaces seem to differ considering remaining calculus & root surface roughness. The purpose of this study was to compare a magnetostrictive ultrasonic scaler instrument with a piezoelectric ultrasonic scaler. Methods: 40 human teeth were assigned to two treatment groups (n=20). Teeth were scaled and data related to the duration of scaling and effectiveness of instrument in calculus removal and the amount of surface roughness were collected and statistically analyzed by paired samples T- test. Results: the results revealed that the mean of time needed for instrumentation in piezoelectric and magnetostrictive ultrasonic instruments was 216 ± 52.05 s and 274.5 ± 87.74 s respectively. There was no statistically significant difference between two ultrasonic instruments considering cululus removal. Furthermore, our study showed that Magnetostrictive instrument left more smooth surface ...
Journal of periodontal & implant science
The effects of magnetostrictive and piezoelectric devices on tooth surfaces seem to differ with r... more The effects of magnetostrictive and piezoelectric devices on tooth surfaces seem to differ with regard to the root surface roughness they produce. This study aimed to compare the results of scaling using magnetostrictive and piezoelectric devices on extracted teeth. Forty-four human extracted teeth were assigned to four study groups (n=11). In two groups (C100 and C200), the teeth were scaled using a magnetostrictive device and two different lateral forces: 100 g and 200 g, respectively. In the other two groups (P100 and P200), the teeth were scaled with a piezoelectric device with 100 g and 200 g of lateral force, respectively. he teeth were scaled and the data on the duration of scaling and the amount of surface were collected and analyzed using the t-test. The mean time needed for instrumentation for the piezoelectric and magnetostrictive devices was 50:54 and 41:10, respectively, but their difference was not statistically significant (P=0.171). For root surface roughness, we onl...