A 45-year-old woman was referred for management of an infection associated with two implant-supported crowns replacing the maxillary central incisors. Two tissue-level implants had been placed and restored with cemented single metal-ceramic crowns in those sites 4 years previously. The patient presented with a draining sinus (i.e. a pathological duct from an abscess cavity to a surface) 3 mm from the midfacial peri-implant mucosal margin of the maxillary right implant crown. She was in good general health, did not smoke, showed a good oral hygiene status, and had no history of periodontal disease. The implants were well positioned. While the patient was very satisfied with the appearance of her crowns, she had noted that the peri-implant soft tissue had receded since their insertion and was concerned about the possibility of further recession.
Deficient vertically or deficient vertically AND horizontally
* General SAC assessment modifiers that are also part of the ERA. To avoid redundancy they are listed in this section even if no complete ERA has been made.
** Not applicable to the ERA of immediate placement cases and replaced by "Socket Integrity" listed below under "Surgical SAC Classification". For all other placement types this value is a classification determinant and listed here even if no complete ERA has been made.
Surgical SAC classification
SAC Level
Advanced
Defining Characteristics
Up to three missing teeth to be replaced with an implant-borne prosthesis or prostheses
Modality
-
Placement Protocol
Early or late implant placement
Tooth Site
-
Socket Morphology
-
Socket Integrity
-
Bone Volume
Horizontally and vertically sufficient
Anatomic Risk
Low
Esthetic Risk
Medium
Complexity
Moderate
Risk of Complications
Moderate
Prosthodontic SAC classification
SAC Level
Straightforward
Defining Characteristics
Up to three missing teeth to be replaced with an implant-borne restoration or restorations
Loading Protocol
Conventional or early
Retention
Cemented, with prosthesis margin < 3mm submucosal Cemented, with prosthesis margin < 3mm submucosal
Maxillomandibular Relationship
-
Mesio-Distal Space
Adequate for the replacement of all missing teeth
Inter-Arch Distance
-
Bruxism
Absent
Esthetic Risk
Medium
Provisional Implant-Supported Prosthesis
Prosthodontic margin < 3 mm apical to mucosal crest Prosthodontic margin < 3 mm apical to mucosal crest
Interim Prosthesis during Healing
Removable Removable
Occlusion/Articulation
Harmonious
Occlusal Scheme/Issues
-
Surgical SAC Modifiers
Periodontal Status
Healthy
Prosthodontic SAC Modifiers
Soft Tissue Contour and Volume
Ideal
General SAC Modifiers
Oral Hygiene and Compliance
Good
Access
Adequate
Craniofacial/Skeletal Growth
Completed
Publication date: Dec 21, 2015
Last review date: Dec 14, 2020
Next review date: Dec 14, 2023
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