2 The Determinants of the SAC Classification

2   The Determinants of the SAC Classification

A. Dawson, S.Chen

2.1 Definitions

Process: The implant dentistry “process” is defined as the full range of issues pertaining to assessment, planning, management of treatment, and subsequent maintenance of the implant and prosthetic reconstruction; it does not merely refer to the clinical treatment procedures that are involved.

Normative: In this context, “normative” relates to the classification that conforms to the norm, or standard, for a given clinical situation in implant dentistry. The normative classification relates to the most likely representation of the classification of a case. The normative classification may alter as a result of modifying factors and/or complications.

Timing of implant placement: A number of different classifications have been used to describe the timing of implant placement after tooth extraction. In this book, the classification detailed by Chen and Buser (2008), which is a modification of the classification proposed by Hämmerle et al. (2004), will be used. This classification is summarized in Table 1.

Table 1. Classification of the Timing of Implant Placement following Tooth Extraction (Chen and Buser 2008).
Classification Descriptive Terminology Period after Tooth Extraction Desired Clinical Situation at Implant Placement
Type 1 Immediate placement Immediately following extraction Post-extraction site with no healing of bone or soft tissues
Type 2 Early placement with soft-tissue healing Typically 4 to 8 weeks Post-extraction site with healed soft tissue but without significant bone healing
Type 3 Early placement with partial bone healing Typically 12 to 16 weeks Post-extraction site with healed soft tissues and with significant bone healing
Type 4 Late placement Typically 6 months or longer Fully healed post-extraction site

Implant loading protocol: In discussions relating to the systems for loading implants after implant placement, the definitions used by Cochran et al. (2004) will be used. These are summarized in Table 2.

Table 2. Definitions of Loading Protocols (Cochran et al. 2004).
Loading Protocol Definition
Immediate restoration A restoration is inserted within 48 hours of implant placement, but not in occlusion with the opposing dentition
Immediate loading A restoration is placed in occlusion with the opposing dentition within 48 hours of implant placement
Conventional loading The prosthesis is attached after a healing period of 3 to 6 months
Early loading A restoration in contact with the opposing dentition is placed at least 48 hours after implant placement but not later than 3 months afterwards
Delayed Loading The prosthesis is attached in a procedure that takes place some time later than the conventional healing period of 3 to 6 months

2.2 Assumptions

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Jan 8, 2015 | Posted by in Implantology | Comments Off on 2 The Determinants of the SAC Classification
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