Comparison of Soft Tissue Thermal Changes Induced by Three Types of Diode Lasers at 810, 940, and 980nm Wavelengths

Shahbazi, Samson; ghadim, N Moezzi; Mirzaei, Ar.; Lawaf, SH; Gutknecht, N.; Salmas, S. Chaychi; Azizi, Arash

doi:10.29252/jrdms.5.2.7

Cited by 3 publications

(1 citation statement)

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“…The latest literature has documented evidence of successful depigmentation using diode lasers, and considered it as the best laser for soft tissue treatment due to the smaller size of the unit and lower cost if compared to other types of lasers, added to shallow tissue penetration that prevents deleterious effects to the teeth roots [ 4 , 10 – 12 ]. Nevertheless, the process of gingival depigmentation should be performed carefully with adjacent teeth protection, since an improper laser application may postpone wound healing and cause gingival collapse, as well as underlying tissue damage of the periosteum and bone [ 13 ].…”

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confidence: 99%

Long-Term Esthetically Depigmented Gingiva in a Short Operative Duration, Using Two Modes of 940 nm Diode Lasers—A Randomized Clinical Trial

Hamzah

Alattar

Salman

2022

International Journal of Dentistry

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Aim. This study aims to compare the effectiveness of the two modes of 940 nm diode lasers on gingival depigmentation. Methods. Twenty patients (11 females and 9 males) participated in this study; they were free of any systemic or local condition and randomly assembled into two groups: continuous wave (CW) and pulsed groups, in contact modes. The diode laser was of 940 nm wavelength and 1-2 W irradiation power for the two modes in all cases. A single session of irradiation was applied to the facial gingivae of the upper and lower anterior segments. Photographs were taken preoperatively and postoperatively for all patients, and a questionnaire and follow-up were carried out for the next four weeks and after three years. Results. The intraoperative duration of both modes was considerably short, with a short chair time subsequently. A statistically significant decrease in the intensity of pain, discomfort, and bleeding p ≤ 0.05 was noticed during the first week of follow-up within each group. Nonetheless, the two groups showed a close pattern of decline with no statistically significant differences between them. It was also clear that pain and discomfort were strongly correlated with each other within each group, and the correlation was statistically significant. On the other hand, carbonization was minimal in a few cases treated with CW mode but still not statistically significant. Finally, although the gingival pigmentation index (GPI) differences were not statistically significant between the two groups, they were significant within each group. Conclusions. The diode laser (940 nm) offered an effective and safe modality, providing an optimal aesthetic result that can meet patient satisfaction with minimal pain, bleeding, discomfort, intraoperative time, and the possibility of recurrence in the treatment of gingival hyperpigmentation.

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Section: Introductionmentioning

confidence: 99%

Long-Term Esthetically Depigmented Gingiva in a Short Operative Duration, Using Two Modes of 940 nm Diode Lasers—A Randomized Clinical Trial

Hamzah

Alattar

Salman

2022

International Journal of Dentistry

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Temperature Rise and Pain Following the Use of 810 and 980 nm Diode Lasers for Second-Stage Dental Implant Surgery: A Clinical Trial

Hosseini Mehvar,

Azizi,

Lavaf

et al. 2024

J Lasers Med Sci

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Introduction: Many surgical procedures in a soft tissue are performed using diodes lasers. This study aimed to assess the temperature rise and pain following the use of 810 and 980 nm diode lasers for second-stage dental implant surgery. Methods: This clinical trial was conducted on 24 osseointegrated dental implants that were randomly divided into two groups of 810 nm and 980 nm diode lasers. The temperature rise in each group was measured right after uncovering by the laser and 15 minutes later by a thermocouple, compared with the baseline temperature of gingival tissue. The level of pain was also measured at 24 hours postoperatively by using a visual analog scale. Data were analyzed by ANOVA, Tukey’s test, and t test (alpha=0.05). Results: Within-group comparisons by ANOVA showed a significant difference in tissue temperature between the three time points in both groups (P<0.0001). Pairwise comparisons by Tukey’s test showed that the temperature at baseline (P<0.0001) and 15 seconds after uncovering was significantly lower than that immediately after uncovering in both groups (P<0.0001). The mean tissue temperature and the mean pain score in the 980 nm laser group were significantly higher than the corresponding values in the 810 nm laser group (P<0.05). Conclusion: According to the results, temperature rise in the use of the 980 nm laser was higher than the 810 nm laser. The use of 810 nm diode laser was associated with lower temperature rise and significantly lower pain score after 24 hours.

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Laser and Bio-Medical Photonics (LBMP 2023)

Bagnato

2024

J Lasers Med Sci

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Comparison of Soft Tissue Thermal Changes Induced by Three Types of Diode Lasers at 810, 940, and 980nm Wavelengths

Cited by 3 publications

References 10 publications

Long-Term Esthetically Depigmented Gingiva in a Short Operative Duration, Using Two Modes of 940 nm Diode Lasers—A Randomized Clinical Trial

Long-Term Esthetically Depigmented Gingiva in a Short Operative Duration, Using Two Modes of 940 nm Diode Lasers—A Randomized Clinical Trial

Temperature Rise and Pain Following the Use of 810 and 980 nm Diode Lasers for Second-Stage Dental Implant Surgery: A Clinical Trial

Laser and Bio-Medical Photonics (LBMP 2023)

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