Treatment of periodontal pockets with a diode laser

Moritz, Andreas; Schoop, U.; Goharkhay, K.; Schauer, Petra; Doertbudak, Orhun; Wernisch, J.; Sperr, Wolfgang R.

doi:10.1002/(sici)1096-9101(1998)22:5<302::aid-lsm7>3.0.co;2-t

Cited by 284 publications

(188 citation statements)

References 12 publications

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“…It has been reported that 2.5 W of diode laser irradiation could result in partial carbonizations of the root surfaces [22], but could achieve a bacterial reduction in periodontal pockets up to three log steps [23]. In another study, more than 50% of bacteria in the infected root canals could be killed by diode laser at a single irradiation with 2 W of laser power [13].…”

Section: Discussionmentioning

confidence: 98%

Bactericidal effects of diode laser on Streptococcus mutans after irradiation through different thickness of dentin

et al. 2006

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Background and Objectives: A reliable method to eradicate the bacteria of residual carious dentin has not yet been developed. The aim of this study was to evaluate the antibacterial effect of a diode laser on Streptococcus mutans through different thickness (500, 1,000, and 2,000 mm) of human dentin. The thermal effect of laser irradiation was also investigated. Study Design/Materials and Methods: Dentin specimens were inoculated with 2 ml of S. mutans on one side and irradiated by a diode laser on the other side with a power output ranging from 0.5 to 7 W. The laser tip was swept with the whole irradiation area of 7 mmÂ3 mm at a speed of about 10 mm/second with a total irradiation time of 30 seconds. Cooling with distilled water (30 ml/minute) was applied simultaneously during laser irradiation. After laser irradiation, the bacteria was removed from the dentin surfaces and cultured for 48 hours at 378C anaerobically to assess the colony forming units (CFU) per ml. The morphology of the lased bacteria and the temperature rise during laser irradiation were observed by scanning electron microscope (SEM) and measured by thermocouple, respectively. Results: The results revealed that 7 W of laser power could kill 97.7% of CFU through 500 mm thickness of dentin. However, the bactericidal efficiency was significantly reduced as the dentin thickness was increased. The morphological changes of lased bacteria ranged from less affected such as loss of their wall bands and existence of minicells to more severely degenerated, such as disintegration and fusion of cells with pores on the cell wall. Only the dentin specimens with a thickness of 500 mm exhibited a temperature rise greater than 5.58C after receiving 5 or 7 W of laser irradiation. Conclusions: A diode laser can eliminate the Streptococcus mutans of the residual carious dentin without inducing high pulpal temperature rise when the remaining dentin thickness is greater than 1 mm.

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Section: Discussionmentioning

confidence: 98%

Bactericidal effects of diode laser on Streptococcus mutans after irradiation through different thickness of dentin

et al. 2006

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“…Diode laser systems utilized in PDT may produce wavelengths which are absorbable by hemoglobin and would produce oxygenated hemoglobin and melanin; this phenomena happens when the wavelengths produced by laser systems belong to the infrared region (Moritz et al, 1998). Mechanism of action of low level laser therapy includes optical receivers' involvement in the electron transport chain on the mitochondrial membrane.…”

Section: Discussionmentioning

confidence: 99%

Assessment of the Effect of Photodynamic Therapy on Treatment of Moderate-to-Severe Periodontitis; a Randomized Clinical Trial Study

Amoian¹,

Mirzaee²,

Hosseini³

2016

GJHS

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Background and Aim: Photodynamic therapy is a localized non-invasive treatment modality for the periodontal disease. Some evidences have shown that this technique is effective in improving the treatment outcome. This study compared the effects of photodynamic therapy with and without scaling and root planing and scaling and root planing alone on the clinical parameters of the chronic periodontitis. Materials and Methods:In this single-blind, randomized clinical trial, 30 chronic periodontitis patients (10 for each modality) were selected and three different methods; photodynamic therapy alone (Group1) by FotoSan 630 system, scaling and root planning (SRP) alone (Group2), scaling and root planing combined with photodynamic therapy (Group3) were done for them randomly. Clinical parameters of probing pocket depth (PPD), bleeding on probing (BOP), and clinical attachment level (CAL) were measured at the baseline and 3, 6 and 12 weeks later. One-sided analysis of variance test was used to analyze PPD and CAL among the treatment groups in each time interval while the paired comparisons were carried out by employment of Dunnett's test. The treatment groups were statically analyzed by the chi-square test regarding BOP.Results: Before the treatment; no significant differences observed among treatment modalities regarding clinical parameters; while the differences were significant at three weeks (p<0.0001 for PPD and CAL; p<0.001 for BOP); six weeks (p<0.0001 for PPD and CAL, p<0.002 for BOP); and 12 weeks after the treatment (all: p<0.0001). The least PPD and CAL values and the most frequency of non-bleeding on probing status were measured for PDT+SRP modality at three, six, and twelve weeks after the treatment. Conclusion:Photodynamic therapy supported the clinical parameters of periodontitis similar to SRP; however, PDT combined with SRP demonstrated a better result than that of SRP alone. Therefore, PDT combined with SRP can be used to improve outcomes of clinical parameters of periodontitis as compared to SRP alone in the short-term.

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“…Diode lasers can be used for many soft tissue dental procedures, which include soft tissue surgeries [6][7][8] and periodontal [9,10] and peri-implant surgeries [11]. The study was carried out by using a diode laser for gingival retraction.…”

Section: Discussionmentioning

confidence: 99%

Laser Gingival Retraction: A Quantitative Assessment

Krishna

Gupta²,

Reddy³

et al. 2013

JCDR

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Background: Proper gingival retraction improves the prognosis of crowns and bridges with sub gingival finishlines.Use of lasers assists the operator to achieve proper retraction with good clinical results.Aims: The present study was intended to assess the amount of lateral gingival retraction achieved quantitatively by using diode lasers. Settings and Design:Study was carried on 20 patients attended to a dental institution that underwent root canal treatment and indicated for fabrication of crowns. Material and Methods:Gingival retraction was carried out on 20 teeth and elastomeric impressions were obtained. Models retrieved from the impressions were sectioned and the lateral distance between finish line and the marginal gingival was measured using tool makers microscope. Retraction was measured in mid buccal, mesio buccal and disto buccal regions. Statistical Analysis:The values obtained were used to calculate the mean lateral retraction in microns. Results:Mean retraction values of 399.5 µm, 445.5 µm and 422.5µm were obtained in mid buccal, mesio buccal and disto buccal regions respectively. Conclusions:Gingival Retraction achieved was closer to the thickness of sulcular epithelium and greater than the minimum required retraction of 200um.

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Treatment of periodontal pockets with a diode laser

Cited by 284 publications

References 12 publications

Bactericidal effects of diode laser on Streptococcus mutans after irradiation through different thickness of dentin

Bactericidal effects of diode laser on Streptococcus mutans after irradiation through different thickness of dentin

Assessment of the Effect of Photodynamic Therapy on Treatment of Moderate-to-Severe Periodontitis; a Randomized Clinical Trial Study

Laser Gingival Retraction: A Quantitative Assessment

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