THE 6 ZONES IN IMMEDIATE ESTHETIC IMPLANTOLOGY
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PMID: 41090894
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Sala Zufia "zones immediate esthetic implantology" periodontium peri-implant 6 zones
I now have the definitive source - a 2025 paper by Sala & Zufia published in the International Journal of Esthetic Dentistry. Here is the comprehensive answer:
The 6 Zones in Immediate Esthetic Implantology
Source: Sala L, Zufia J. "The zones in immediate esthetic implantology. From periodontium to peri-implant." Int J Esthet Dent. 2025. [PMID: 41090894]
Context
Immediate Implant Placement and Immediate Provisional (IIPIP) is an increasingly demanded treatment because it minimizes total treatment time and meets patients' esthetic expectations. To predict and control esthetic outcomes, Sala & Zufia (2025) systematized the postextraction alveolar socket and its surrounding structures into six distinct zones - identified alphabetically from A to F - each with a specific biologic role in transitioning a tooth-gingival complex into a healthy peri-implant complex.
The 6 Zones
The six zones are divided into two groups based on their anatomical location relative to the alveolus:
Intra-Alveolar Zones (inside the socket)
| Zone | Name | Key Role |
|---|---|---|
| Zone A | Anchorage Zone | Primary implant stability - the apical or palatal bone where the implant fixture engages for initial mechanical fixation |
| Zone B | Bone Compartment | The buccal and interproximal alveolar bone walls surrounding the implant; bone volume here determines long-term peri-implant bone support and contour |
| Zone C | Clot Compartment | The jump gap (gap between implant surface and socket wall) filled with a blood clot; critical for bone regeneration and soft tissue healing |
Extra-Alveolar Zones (coronal to/outside the socket)
| Zone | Name | Key Role |
|---|---|---|
| Zone D | Dermal Compartment | The soft tissue envelope - gingival and mucosal architecture around the emergence profile; drives papilla preservation and marginal tissue height |
| Zone E | Esthetic Zone | The visible clinical zone of gingival/mucosal display; the area the patient perceives as the esthetic result (pink esthetics) |
| Zone F | Fixed Restoration | The provisional and definitive crown; further subdivided into F1, F2, and F3 to address the subgingival, junctional, and supragingival portions of the restoration |
Zone F Subdivision
Zone F (Fixed Restoration) is uniquely subdivided because the restoration itself actively shapes the peri-implant tissues:
- F1 - Subgingival/emergence profile portion: shapes the soft tissue tunnel and supports gingival architecture
- F2 - Junctional/transmucosal portion: interacts with the biologic width and mucosal seal
- F3 - Supragingival/visible portion: the esthetically visible crown form
Clinical Significance
- Zones A, B, C are surgically managed: implant position, bone grafting of the jump gap, and socket management all target these zones.
- Zones D, E, F are prosthetically and biologically managed: soft tissue support, emergence profile, and provisional restoration design target these zones.
- The zones concept provides a structured framework for diagnosis, surgical planning, and prosthetic design - ensuring each area receives specific attention to maximize the esthetic and biologic outcome.
- The authors emphasize that IIPIP success depends on the integration of planning, surgical intervention, and prosthetic restoration as a unified approach across all 6 zones.
This zone classification was published in 2025 and represents current best-practice thinking for immediate implant therapy in the esthetic region. The framework helps clinicians understand why immediate implant therapy works - and where failures occur - by linking each zone to a specific tissue response.
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