The Lattice or Fractional spot pattern technically differentiates itself by delivering energy through a grid of multiple micro-beams rather than a singular, continuous wash of energy. This segmentation allows for precise management of thermal distribution, ensuring that specific depths are treated while explicitly preserving bridges of healthy tissue to drastically reduce recovery time and thermal injury risks.
The core innovation of this technology is the preservation of "biological reservoirs." By intentionally leaving intervals of normal tissue between microscopic ablation points, the fractional pattern triggers rapid repair mechanisms that traditional continuous lasers cannot replicate.
The Mechanics of Fractional Energy Delivery
The Micro-Beam Grid Configuration
Unlike continuous wave lasers that ablate the entire surface area within the beam's diameter, the Lattice pattern utilizes a grid configuration.
This breaks the laser energy into distinct, spaced micro-beams. This structure allows the practitioner to deliver high-energy pulses to specific points without overwhelming the surrounding tissue.
Precision Thermal Distribution
The primary technical advantage here is the control over thermal distribution.
By spacing out the micro-treatment zones, the technology prevents the cumulative heat buildup often seen in continuous modes. This ensures the energy is focused on depth and remodeling rather than unintended lateral thermal damage.
Biological Advantages over Continuous Lasers
The "Tissue Bridge" Phenomenon
The defining feature of the fractional pattern is the creation of bridges of intact, normal tissue between the ablation points.
These uninjured areas act as biological reservoirs. Because they are untouched by the laser, they retain the cellular machinery necessary to jumpstart the healing process immediately after treatment.
Accelerated Collagen Regeneration
While the micro-beams induce deep tissue thermal damage to stimulate remodeling, the surrounding healthy tissue accelerates epithelial regeneration.
This dual action—damaging specific zones to trigger repair while preserving neighbors to fuel that repair—results in rapid collagen regeneration that continuous lasers, which injure the entire surface, struggle to match.
Assessing Clinical Safety and Risks
Reduction of Thermal Injury
Continuous laser modes carry a higher risk of bulk heating, which can lead to excessive thermal injury and scarring.
The fractional sequential pulse mode mitigates this by precisely controlling the frequency and depth of energy release. This creates a safety buffer that significantly lowers the risk of postoperative complications.
Recovery Timeline Implications
Because the skin is not fully ablated (100% surface removal), the recovery period is significantly shortened.
Patients experience faster re-epithelialization because the healing migrates from the thousands of tiny, healthy bridges inward, rather than having to rebuild the entire surface from the edges of the treated area.
Understanding the Trade-offs
Surface Coverage vs. Depth
It is important to recognize that fractional patterns treat a percentage of the surface area (typically 5% to 30% per pass) rather than the whole field.
While this drastically improves safety and healing speed, it technically means less total surface area is ablated in a single session compared to a full-field continuous beam. Consequently, achieving results comparable to full-field ablation may require multiple passes or treatment sessions, depending on the severity of the condition being treated.
Making the Right Choice for Your Goal
When deciding between fractional patterns and traditional modes, align the technical capability with the clinical objective.
- If your primary focus is Safety and Rapid Recovery: Rely on the Lattice pattern to leverage biological reservoirs, ensuring minimal downtime and significantly reduced risk of thermal scarring.
- If your primary focus is Deep Collagen Remodeling: Utilize the fractional mode to drive energy deep into the tissue to initiate remodeling, trusting the intact tissue bridges to handle the subsequent repair process efficiently.
The Lattice pattern replaces the brute force of continuous ablation with the precision of biological leverage, optimizing the balance between efficacy and patient safety.
Summary Table:
| Feature | Fractional/Lattice Pattern | Traditional Continuous Mode |
|---|---|---|
| Energy Delivery | Grid of multiple micro-beams | Single, continuous wash of energy |
| Tissue Impact | Preserves "healthy tissue bridges" | Full surface ablation/injury |
| Thermal Risk | Low (managed thermal distribution) | High (risk of bulk heating & scarring) |
| Recovery Time | Rapid (days) | Extended (weeks) |
| Primary Benefit | Accelerated collagen & safety | Intense surface resurfacing |
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References
- Ya-ru Wu, Wenzeng Yang. Efficacy evaluation of Lattice Carbon Dioxide Laser Therapy in the treatment of postmenopausal patients with mild to moderate stress urinary incontinence. DOI: 10.12669/pjms.37.7.4077
This article is also based on technical information from Belislaser Knowledge Base .
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