Pub Date : 2015-07-01DOI: 10.4103/0976-2868.158462
Reenesh Mechery, M. Kumar, P. Arora, T. Rajkamal, N. Dinakar
Oral leukoplakia is one of the most common physiologic as well as pathologic white lesion in the oral cavity. Of the many variants, oral proliferative verrucous leukoplakia (OPVL) is a rare clinicopathological entity of unknown etiology. OPLV initially develops as a white hyperkeratotic plaque that eventually becomes a multifocal disease with confluent, exophytic and proliferative features. Published case series with long-term follow-up describes OPVL as a disease with aggressive biological behavior due to its high probability of recurrence and a high rate of malignant transformation. This article describes a rare case report of OPVL associated with oral submucous fibrosis in the light of current information with clinical and histological aspect in a young patient, which was successfully treated with CO2Laser.
{"title":"Oral proliferative verrucous leukoplakia with oral submucous fibrosis treated with CO2laser","authors":"Reenesh Mechery, M. Kumar, P. Arora, T. Rajkamal, N. Dinakar","doi":"10.4103/0976-2868.158462","DOIUrl":"https://doi.org/10.4103/0976-2868.158462","url":null,"abstract":"Oral leukoplakia is one of the most common physiologic as well as pathologic white lesion in the oral cavity. Of the many variants, oral proliferative verrucous leukoplakia (OPVL) is a rare clinicopathological entity of unknown etiology. OPLV initially develops as a white hyperkeratotic plaque that eventually becomes a multifocal disease with confluent, exophytic and proliferative features. Published case series with long-term follow-up describes OPVL as a disease with aggressive biological behavior due to its high probability of recurrence and a high rate of malignant transformation. This article describes a rare case report of OPVL associated with oral submucous fibrosis in the light of current information with clinical and histological aspect in a young patient, which was successfully treated with CO2Laser.","PeriodicalId":345720,"journal":{"name":"Journal of Dental Lasers","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122201646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-07-01DOI: 10.4103/0976-2868.170562
Suryakanth Malgikar, S. Reddy, P. Babu, S. Sagar, P. Kumar, G. Reddy
Background and Objectives: In recent years, there has been a growing interest in the use of dental lasers for treatment of periodontal diseases. Recent preclinical and clinical data have suggested a potential benefit of photodynamic therapy (PDT) in the treatment of periodontitis. Aim: The aim of this study was to evaluate the clinical efficacy of PDT as an adjunct to nonsurgical mechanical therapy (SRP) in the treatment of chronic periodontitis. Materials and Methods: In a single-centered randomized and controlled clinical trial, 24 patients with untreated chronic periodontitis were assigned in a split-mouth design into two treatment groups which included: Group I: SRP only (control group), Group II: SRP and PDT (1% methylene blue solution) (test group). Clinical parameters such as plaque index (PI), gingival index (GI), modified sulcular bleeding index (mSBI), probing depth (PD), and clinical attachment level (CAL) were measured at baseline, 1, 3 and 6 months after therapy. Results: Inter-group and intra-group statistical analyses were performed. The improvement in clinical parameters was significantly greater in Group II as compared to Group I. The mean PD (mm) reduction from baseline to 6 months in Group I was 2.50 ± 0.54, Group II was 2.57 ± 0.53. The mean CAL (mm) gain from baseline to 6 month in Group I was 2.63 ± 0.47, Group II was 2.55 ± 0.44. A statistically significant decrease in PI, GI, mSBI scores was seen in Group II at the end of 6 month (P < 0.001). Conclusion: The present study suggests that an additional application of single episode of PDT could be beneficial adjunct to nonsurgical treatment of chronic periodontitis in terms of clinical parameters as compared to scaling and root planing. Direct subgingival delivery of methylene blue in different concentrations should be performed to further investigate the potential antimicrobial effect of soft lasers in the human periodontal disease.
{"title":"A randomized controlled clinical trial on efficacy of photodynamic therapy as an adjunct to nonsurgical treatment of chronic periodontitis","authors":"Suryakanth Malgikar, S. Reddy, P. Babu, S. Sagar, P. Kumar, G. Reddy","doi":"10.4103/0976-2868.170562","DOIUrl":"https://doi.org/10.4103/0976-2868.170562","url":null,"abstract":"Background and Objectives: In recent years, there has been a growing interest in the use of dental lasers for treatment of periodontal diseases. Recent preclinical and clinical data have suggested a potential benefit of photodynamic therapy (PDT) in the treatment of periodontitis. Aim: The aim of this study was to evaluate the clinical efficacy of PDT as an adjunct to nonsurgical mechanical therapy (SRP) in the treatment of chronic periodontitis. Materials and Methods: In a single-centered randomized and controlled clinical trial, 24 patients with untreated chronic periodontitis were assigned in a split-mouth design into two treatment groups which included: Group I: SRP only (control group), Group II: SRP and PDT (1% methylene blue solution) (test group). Clinical parameters such as plaque index (PI), gingival index (GI), modified sulcular bleeding index (mSBI), probing depth (PD), and clinical attachment level (CAL) were measured at baseline, 1, 3 and 6 months after therapy. Results: Inter-group and intra-group statistical analyses were performed. The improvement in clinical parameters was significantly greater in Group II as compared to Group I. The mean PD (mm) reduction from baseline to 6 months in Group I was 2.50 ± 0.54, Group II was 2.57 ± 0.53. The mean CAL (mm) gain from baseline to 6 month in Group I was 2.63 ± 0.47, Group II was 2.55 ± 0.44. A statistically significant decrease in PI, GI, mSBI scores was seen in Group II at the end of 6 month (P < 0.001). Conclusion: The present study suggests that an additional application of single episode of PDT could be beneficial adjunct to nonsurgical treatment of chronic periodontitis in terms of clinical parameters as compared to scaling and root planing. Direct subgingival delivery of methylene blue in different concentrations should be performed to further investigate the potential antimicrobial effect of soft lasers in the human periodontal disease.","PeriodicalId":345720,"journal":{"name":"Journal of Dental Lasers","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121967640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-07-01DOI: 10.4103/0976-2868.158464
Jafri Zeba, Nafis Ahmad, D. Shukla
Peripheral giant cell granuloma (PGCG) is not a true neoplasm but an exophytic benign growth of gingival tissues which has an origin either from periodontal ligament or mucoperiosteum. Clinically, it appears as a solitary nodule which may be sessile or pedunculated, color may vary from pale pink to deep red or purplish blue. The lesion varies widely in size, but usually is between 0.5 to 2 cm in diameter. The treatment is complete surgical excision which can be done either by a scalpel, electrocautery or lasers. This case report presents use of a diode laser aluminum gallium arsenide (denlase 810 nm) in contact mode for the treatment of PGCG. Use of lasers has shown various advantages over the conventional method and is a good treatment option.
{"title":"Diode laser for treatment of peripheral giant cell granuloma","authors":"Jafri Zeba, Nafis Ahmad, D. Shukla","doi":"10.4103/0976-2868.158464","DOIUrl":"https://doi.org/10.4103/0976-2868.158464","url":null,"abstract":"Peripheral giant cell granuloma (PGCG) is not a true neoplasm but an exophytic benign growth of gingival tissues which has an origin either from periodontal ligament or mucoperiosteum. Clinically, it appears as a solitary nodule which may be sessile or pedunculated, color may vary from pale pink to deep red or purplish blue. The lesion varies widely in size, but usually is between 0.5 to 2 cm in diameter. The treatment is complete surgical excision which can be done either by a scalpel, electrocautery or lasers. This case report presents use of a diode laser aluminum gallium arsenide (denlase 810 nm) in contact mode for the treatment of PGCG. Use of lasers has shown various advantages over the conventional method and is a good treatment option.","PeriodicalId":345720,"journal":{"name":"Journal of Dental Lasers","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116569724","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-07-01DOI: 10.4103/0976-2868.170564
P. Rakhewar, Harshal Patil, Manojkumar S Thorat
Oral squamous papilloma is one of the most common benign epithelial neoplasm, frequently seen on the tongue, palate, uvula, and gingiva; and found to be associated with human papillomavirus (HPV) 6 and 11. Treatment laser-assisted surgery is common because of several advantages such as successful hemostasis, devoid of sutures, wound sterilization, and minimal postoperative pain and edema. The aim of this report is to present the case of oral squamous papilloma of the soft palate in a 57-year-old male patient and its management with a diode laser.
{"title":"Diode laser treatment of an oral squamous papilloma of soft palate","authors":"P. Rakhewar, Harshal Patil, Manojkumar S Thorat","doi":"10.4103/0976-2868.170564","DOIUrl":"https://doi.org/10.4103/0976-2868.170564","url":null,"abstract":"Oral squamous papilloma is one of the most common benign epithelial neoplasm, frequently seen on the tongue, palate, uvula, and gingiva; and found to be associated with human papillomavirus (HPV) 6 and 11. Treatment laser-assisted surgery is common because of several advantages such as successful hemostasis, devoid of sutures, wound sterilization, and minimal postoperative pain and edema. The aim of this report is to present the case of oral squamous papilloma of the soft palate in a 57-year-old male patient and its management with a diode laser.","PeriodicalId":345720,"journal":{"name":"Journal of Dental Lasers","volume":"181 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124746158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-07-01DOI: 10.4103/0976-2868.170563
Y. El-Sharkawy
Background: Knowledge of heat transfer in biological bodies has many diagnostic and therapeutic applications involving either raising or lowering of temperature, and often requires precise monitoring of the spatial distribution of thermal histories that are produced during a treatment protocol. Aim: This paper, therefore, aims to design and implementation a laser therapeutic and imaging system used for carious tracking and drilling by developing a mathematical algorithm using Hilbert transform for edge detection of photothermal imaging. Photothermal imaging has the ability to penetrate and yield information about an opaque medium well beyond the range of conventional optical imaging. Method: Owing to this ability, Q-switching neodymium-doped yttrium aluminium garnet laser at wavelength 1064 nm has been extensively used in human teeth to study the subsurface deposition of laser radiation. Results: The high absorption coefficient of the carious as compared to the normal region contributes to a greater increase in temperature generating infrared thermal radiation captured by the high resolution thermal camera. Changing the pulse repetition frequency of the laser pulses affects the penetration depth of the laser, which can provide three-dimensional images in arbitrary planes and allow imaging deep within a solid tissue. Conclusions: Photothermal imaging with 2-D Hilbert transform algorithm is a powerful tool for human carious detection
{"title":"Design and implementation of noninvasive laser imaging system for human teeth carious detection and removal","authors":"Y. El-Sharkawy","doi":"10.4103/0976-2868.170563","DOIUrl":"https://doi.org/10.4103/0976-2868.170563","url":null,"abstract":"Background: Knowledge of heat transfer in biological bodies has many diagnostic and therapeutic applications involving either raising or lowering of temperature, and often requires precise monitoring of the spatial distribution of thermal histories that are produced during a treatment protocol. Aim: This paper, therefore, aims to design and implementation a laser therapeutic and imaging system used for carious tracking and drilling by developing a mathematical algorithm using Hilbert transform for edge detection of photothermal imaging. Photothermal imaging has the ability to penetrate and yield information about an opaque medium well beyond the range of conventional optical imaging. Method: Owing to this ability, Q-switching neodymium-doped yttrium aluminium garnet laser at wavelength 1064 nm has been extensively used in human teeth to study the subsurface deposition of laser radiation. Results: The high absorption coefficient of the carious as compared to the normal region contributes to a greater increase in temperature generating infrared thermal radiation captured by the high resolution thermal camera. Changing the pulse repetition frequency of the laser pulses affects the penetration depth of the laser, which can provide three-dimensional images in arbitrary planes and allow imaging deep within a solid tissue. Conclusions: Photothermal imaging with 2-D Hilbert transform algorithm is a powerful tool for human carious detection","PeriodicalId":345720,"journal":{"name":"Journal of Dental Lasers","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116654991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-07-01DOI: 10.4103/0976-2868.158461
A. Al-Khatib, Asmaa S Al-Azzawi
The Objectives of this Study: The objective of the study was to evaluate the efficiency of diode laser 940 nm in both, continuous and pulsed modes. Then compare the outcomes of frenectomy procedure, and find the best mode that satisfies the patient's and the surgeon's criteria. Materials and Methods: This study was carried out on 14 patients of which 7 were males and 7 were females with age range from 7 to 46 years. Patients underwent diode laser-assisted frenectomy in continuous wave (CW) mode with power ranging from 1.5–3 W and pulsed mode, which was subdivided into comfort pulse 0 (CP0) with 6–10 W peak power; 1.2–2 W average power and CP2with 2–10 W peak power; 1–5 W average power. Anesthesia method and need, the duration of surgery and intraoperative bleeding events were recorded in all cases. In addition, patient preoperative fear, perception and comments were reported. Ratings of the postoperative pain and the functional complications for each patient in a questionnaire survey were reported using the Wong-Baker FACES Pain Rating Scale at operation day throughout the 1st week postoperatively. All patients were examined at 2, 7, and 21 days after the operation in order to assess the surgical wound healing. Results: In the clinical study, seven patients were operated on without infiltration anesthesia (only spray anesthesia) in the pulsed mode while in CW-mode only one patient operated on with spray anesthesia in low power. Intraoperative bleeding events were bloodless to oozing. There was no preoperative fear; patients' perceptions were comfortable with satisfactory comments except in CW cases and some of the CP0 cases. Severe postoperative complications were absent in all subjects. The reported survey results indicated that the patients treated with the laser had normal day activity on operation day, less postoperative pain and fewer functional complications were noticed in the CP2mode. The surgical wound healing was within normal limits in 7–14 days. Carbonization was the main feature of cases treated with CW-mode while it was mostly absent in the pulsed mode. Conclusion: The use of CW-mode of diode laser can be considered no more suitable for performing oral soft tissues surgery. The pulsed mode was found more practical, effective and easy to carry out incisions, cuttings with less intra and postoperative complications considering its advantages in the clinical cases. The CP2pulsed mode laser treatment offers a safe, effective, acceptable, with impressive outcomes particularly for young patients.
{"title":"Comparative study of diode laser 940 nm in performing frenectomy in both: Continuous and pulsed modes: An in vivo study","authors":"A. Al-Khatib, Asmaa S Al-Azzawi","doi":"10.4103/0976-2868.158461","DOIUrl":"https://doi.org/10.4103/0976-2868.158461","url":null,"abstract":"The Objectives of this Study: The objective of the study was to evaluate the efficiency of diode laser 940 nm in both, continuous and pulsed modes. Then compare the outcomes of frenectomy procedure, and find the best mode that satisfies the patient's and the surgeon's criteria. Materials and Methods: This study was carried out on 14 patients of which 7 were males and 7 were females with age range from 7 to 46 years. Patients underwent diode laser-assisted frenectomy in continuous wave (CW) mode with power ranging from 1.5–3 W and pulsed mode, which was subdivided into comfort pulse 0 (CP0) with 6–10 W peak power; 1.2–2 W average power and CP2with 2–10 W peak power; 1–5 W average power. Anesthesia method and need, the duration of surgery and intraoperative bleeding events were recorded in all cases. In addition, patient preoperative fear, perception and comments were reported. Ratings of the postoperative pain and the functional complications for each patient in a questionnaire survey were reported using the Wong-Baker FACES Pain Rating Scale at operation day throughout the 1st week postoperatively. All patients were examined at 2, 7, and 21 days after the operation in order to assess the surgical wound healing. Results: In the clinical study, seven patients were operated on without infiltration anesthesia (only spray anesthesia) in the pulsed mode while in CW-mode only one patient operated on with spray anesthesia in low power. Intraoperative bleeding events were bloodless to oozing. There was no preoperative fear; patients' perceptions were comfortable with satisfactory comments except in CW cases and some of the CP0 cases. Severe postoperative complications were absent in all subjects. The reported survey results indicated that the patients treated with the laser had normal day activity on operation day, less postoperative pain and fewer functional complications were noticed in the CP2mode. The surgical wound healing was within normal limits in 7–14 days. Carbonization was the main feature of cases treated with CW-mode while it was mostly absent in the pulsed mode. Conclusion: The use of CW-mode of diode laser can be considered no more suitable for performing oral soft tissues surgery. The pulsed mode was found more practical, effective and easy to carry out incisions, cuttings with less intra and postoperative complications considering its advantages in the clinical cases. The CP2pulsed mode laser treatment offers a safe, effective, acceptable, with impressive outcomes particularly for young patients.","PeriodicalId":345720,"journal":{"name":"Journal of Dental Lasers","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115445039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-07-01DOI: 10.4103/0976-2868.170561
K. Patil, P. Bhattacharya, M. Guledgud
{"title":"Effectiveness of 904 nm gallium arsenide diode laser in treatment of oral lichen planus: Report of two cases","authors":"K. Patil, P. Bhattacharya, M. Guledgud","doi":"10.4103/0976-2868.170561","DOIUrl":"https://doi.org/10.4103/0976-2868.170561","url":null,"abstract":"","PeriodicalId":345720,"journal":{"name":"Journal of Dental Lasers","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126482792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-07-01DOI: 10.4103/0976-2868.158463
V. Jain, G. Jaiswal
Ankyloglossia or tongue-tie refers to an abnormally short lingual frenulum. Ankyloglossia is a recognized but poorly defined condition and has been reported to cause feeding difficulties, dysarthria, dyspnea, and social or mechanical problems in childhood and adolescence. This article reports a simple, safe, and effective way for management of ankyloglossia associated with restricted movement of the tongue. The treatment involved a diode laser for removal of the lingual frenum, which healed uneventfully. A marked improvement in the movement of the tongue was observed at follow-up visits in the treated case.
{"title":"Diode laser: An alternative treatment modality for ankyloglossia","authors":"V. Jain, G. Jaiswal","doi":"10.4103/0976-2868.158463","DOIUrl":"https://doi.org/10.4103/0976-2868.158463","url":null,"abstract":"Ankyloglossia or tongue-tie refers to an abnormally short lingual frenulum. Ankyloglossia is a recognized but poorly defined condition and has been reported to cause feeding difficulties, dysarthria, dyspnea, and social or mechanical problems in childhood and adolescence. This article reports a simple, safe, and effective way for management of ankyloglossia associated with restricted movement of the tongue. The treatment involved a diode laser for removal of the lingual frenum, which healed uneventfully. A marked improvement in the movement of the tongue was observed at follow-up visits in the treated case.","PeriodicalId":345720,"journal":{"name":"Journal of Dental Lasers","volume":"70 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125964175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-07-01DOI: 10.4103/0976-2868.170566
K. Nilesh, N. Malik, N. Vibhute, G. Suragimath
Oral verrucous carcinoma (OVC) is a variant of oral squamous cell carcinoma which shows a local invasive pattern without any distant metastases. Accurate diagnosis of OVC depends on a careful association between clinical and histological features of the lesion. This paper reports a case of OVC over mandibular alveolar mucosa, mimicking Candidiasis. Use of diode laser for the management of the lesion is also described.
{"title":"Application of diode laser for the management of oral verrucous carcinoma mimicking Candidiasis","authors":"K. Nilesh, N. Malik, N. Vibhute, G. Suragimath","doi":"10.4103/0976-2868.170566","DOIUrl":"https://doi.org/10.4103/0976-2868.170566","url":null,"abstract":"Oral verrucous carcinoma (OVC) is a variant of oral squamous cell carcinoma which shows a local invasive pattern without any distant metastases. Accurate diagnosis of OVC depends on a careful association between clinical and histological features of the lesion. This paper reports a case of OVC over mandibular alveolar mucosa, mimicking Candidiasis. Use of diode laser for the management of the lesion is also described.","PeriodicalId":345720,"journal":{"name":"Journal of Dental Lasers","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123128713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2015-07-01DOI: 10.4103/0976-2868.158465
M. Malekipour, F. Alizadeh, F. Shirani, S. Amini
Objectives: As bonding ability to tooth surface is an important factor in durability of composite restorations, the aim of this in vitro study was to evaluate the effect of 808 nm diode laser irradiation with different power outputs on the shear bond strength of composite bonded to the dentin before and after applying the bonding agent. Materials and Methods: A total of 35 healthy third molars were mounted in acrylic resin in a way that each molar had two test sites and divided into seven groups of 10 each. In the control group, the bonding agent was used without laser application. An 808 nm diode laser with different power outputs of 0.5, 1 and 1.5 W for a duration of 20 s was irradiated perpendicularly to the dentin surfaces in three of the experimental groups before and in the other three groups after applying the bonding agent. After composite cylinders had been adhered, they were examined to determine their shear bond strength. Results: According to the least significant difference test, the bond strength mean significantly higher in the control group (P < 0.001) and in all laser power outputs, the mean bond strength was significantly higher in the groups for which laser was irradiated before applying the bonding agent than the groups for which laser was irradiated after applying the adhesive (P < 0.05). Conclusion: Considering the higher bond strength in the control group, it seems that applying laser does not increase the bond strength of composite to the dentin.
{"title":"The effect of 808 nm diode laser irradiation on shear bond strength of composite bonded to dentin before and after bonding","authors":"M. Malekipour, F. Alizadeh, F. Shirani, S. Amini","doi":"10.4103/0976-2868.158465","DOIUrl":"https://doi.org/10.4103/0976-2868.158465","url":null,"abstract":"Objectives: As bonding ability to tooth surface is an important factor in durability of composite restorations, the aim of this in vitro study was to evaluate the effect of 808 nm diode laser irradiation with different power outputs on the shear bond strength of composite bonded to the dentin before and after applying the bonding agent. Materials and Methods: A total of 35 healthy third molars were mounted in acrylic resin in a way that each molar had two test sites and divided into seven groups of 10 each. In the control group, the bonding agent was used without laser application. An 808 nm diode laser with different power outputs of 0.5, 1 and 1.5 W for a duration of 20 s was irradiated perpendicularly to the dentin surfaces in three of the experimental groups before and in the other three groups after applying the bonding agent. After composite cylinders had been adhered, they were examined to determine their shear bond strength. Results: According to the least significant difference test, the bond strength mean significantly higher in the control group (P < 0.001) and in all laser power outputs, the mean bond strength was significantly higher in the groups for which laser was irradiated before applying the bonding agent than the groups for which laser was irradiated after applying the adhesive (P < 0.05). Conclusion: Considering the higher bond strength in the control group, it seems that applying laser does not increase the bond strength of composite to the dentin.","PeriodicalId":345720,"journal":{"name":"Journal of Dental Lasers","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117107552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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