Exploring the Role of Diode Lasers in Modern Dentistry

Semiconductor Review | Thursday, December 19, 2024

In recent decades, many studies have investigated the supplementary use of high-intensity and low-level energy lasers in treating periodontal disease. This article discusses the benefits of the diode laser in a dental setup.

Fremont, CA: Over the last several decades, numerous studies have explored the adjunctive application of high-intensity and low-level energy lasers in periodontal treatment. While the evidence supporting the efficacy of diode-laser therapy as a supplementary treatment remains insufficient, various studies have documented its bactericidal and detoxifying properties during nonsurgical periodontal therapy (NSPT). Additionally, the diode laser has been recognized for its positive effects in alleviating pain, enhancing wound healing, and eliciting anti-inflammatory responses in patients undergoing treatment for gingivitis or periodontal disease.

Boosts Tissue Repair:

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The diode laser functions through a semiconductor integrated within a crystal and are designed explicitly for soft tissue applications. While the biological impacts of laser radiation on oral tissues remain partially unclear, it has been proposed that the low-level laser energy emitted by diode lasers facilitates accelerated tissue repair and wound healing, highlighting its bio-stimulatory properties. The influence of low-level laser energy at the cellular level is attributed to photochemical reactions occurring within the cells, as opposed to thermal effects.

The diode laser, operating at 655 and 980 nanometers wavelengths, does not engage with dental hard tissues. Its applications include the cutting and coagulation of soft tissue, and it has been suggested for procedures such as sulcular debridement and curettage. Recent research has indicated short-term microbiological benefits associated with diode laser therapy, positive patient acceptance and a high level of safety. Additionally, using a diode laser offers enhanced ergonomic advantages for the practitioner.

Wound Healing and Tissue Regeneration:

Wound healing and tissue regeneration represent another area of expertise for the diode laser. Studies indicate that high-frequency, low-level diode treatments significantly enhance human gingival epithelial cells' proliferation and migration rates (HGEC) within the initial hours following treatment. Furthermore, periodontal ligament fibroblasts (PDLF) exhibited notable increases in proliferation during the first 24 to 48 hours, although this growth plateaued by the 72-hour point. This effect is advantageous in the wound-healing process, particularly in healing by primary intention, as it facilitates the formation of a shorter junctional epithelium and minimizes apical migration.

Positively Influences the Stem Cells:

The diode laser positively influences the periodontal ligament fibroblasts (PDLF), and impacts stem cells. Research has found that stem cells derived from the pulp of a permanent tooth can differentiate into osteoblasts, fibroblasts, and cementoblasts, essential for repairing periodontal tissues following dental injuries. Microscopic examination following diode laser treatment revealed enhanced proliferation of fibroblasts, endothelial cells, osteoblasts, epithelial cells, and lymphocytes. Additionally, there is evidence of increased proliferation of mesenchymal, bone marrow, and adipose tissue stem cells, although these were not the primary focus of the investigation.

When a diode laser emits energy at an appropriate wavelength to a specific area, the power is absorbed, generating heat. In clinical trials, the diode laser has been utilized at the minimum output level necessary to maintain its effectiveness without compromising its operational capabilities.

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