difference between minimally invasive surgery and convention periodontal surgery
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minimally invasive periodontal surgery compared conventional periodontal flap surgery systematic review
Minimally invasive periodontal surgery (MIPS) vs conventional periodontal surgery
| Feature | MIPS | Conventional periodontal surgery |
|---|---|---|
| Incision and flap | Very small incisions with limited flap elevation, often papilla-preserving | Wider incisions and a larger flap reflected to expose the root and bone |
| Access and visibility | More restricted, often aided by magnification or microsurgical instruments | Broad access and direct visibility of roots, bone defects, and furcations |
| Tissue trauma | Less soft-tissue disruption and better preservation of blood supply | Greater tissue reflection and manipulation |
| Sutures | Fine microsutures, usually fewer | Conventional sutures, often more extensive flap closure |
| Healing and comfort | Usually less bleeding, swelling, pain, and faster early healing | More postoperative discomfort and a longer early recovery period |
| Aesthetic effect | Better preservation of gingival papillae and less recession risk, especially in visible areas | Greater possibility of recession or papillary changes, depending on flap design and defect |
| Best suited for | Localized intrabony defects, regenerative surgery, esthetic sites, and selected patients with good access | Generalized or complex disease, multiple sites, furcation defects, extensive osseous surgery, or when broad access is necessary |
| Technical demand | Higher. Requires training, precise instrumentation, and often magnification | More established and generally less technique-sensitive |
| Cost and time | May require specialized instruments and microsurgical training | Usually uses standard surgical instruments and techniques |
Main idea: both approaches aim to eliminate residual periodontal pockets, remove calculus/granulation tissue, and, where indicated, regenerate lost supporting tissues. The difference is primarily how much tissue is reflected to gain access.
For suitable intrabony periodontal defects, MIPS can give favorable probing-pocket reduction and clinical attachment gain, with better patient-centered outcomes in many studies. However, evidence is still limited by small and heterogeneous trials, so it is not automatically superior for every periodontal defect. A 2019 systematic review found an approximately 0.93 mm greater pocket-depth reduction and 1.0 mm greater attachment gain versus traditional flaps based on only two randomized trials, so the estimate should be interpreted cautiously (systematic review). A newer review also found that the effects of flap design and regenerative biomaterials are difficult to separate (2026 review).
In short:
- Choose MIPS when the defect is localized and preservation of soft tissue, early comfort, and esthetics are priorities.
- Choose conventional flap surgery when extensive access is required to manage complex periodontal anatomy or widespread disease.
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