 
                                Connective-Tissue Graft to Increase the Width of the Keratinized Mucosa Around an Osseointegrated Implant
Adequate peri-implant soft-tissue thickness is essential not only for esthetic but also for functional reasons. In this case, Vincenzo Iorio Siciliano demonstrates how he achieved increased height and thickness of posterior peri-implant soft tissues to obtain a stable mucosal seal and a width of keratinized tissue favorable to toothbrushing.
The patient, a healthy 38-year-old woman, was referred for increasing the width of the keratinized tissues at the buccal aspect of dental implant 46. The site exhibited a premature-closure screw exposure caused by trauma during chewing, with inadequate keratinized tissue.
 
                                                     
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                General information
| Case Type | |
|---|---|
| Jaw | Mandible | 
| Area | Posterior | 
| # of Teeth | 1 | 
| # of Implants | 1 | 
| Type of Implants | Two-Piece | 
| Attachment | Two-Piece | 
| Bone Augmentation | No | 
|---|---|
| Augmentation Materials | - | 
| Guided Surgery | No | 
| Soft Tissue Grafting | Staged | 
| Abutment Type | Standard | 
| Prosthesis Type | FDP | 
Esthetic Risk Assessment
| Esthetic Risk Factors | Low | Medium | High | 
|---|---|---|---|
| Medical Status | Healthy | Compromised | |
| Smoking Habit | Non-smoker | Light smoker (< 10 cigarettes per day) | Heavy smoker (>= 10 cigarettes per day) | 
| Patient's Esthetic Expectations | Low | Medium | High | 
| Lip Line | No exposure of papillae | Exposure of papillae | Full exposure of mucosa margin | 
| Periodontal Phenotype | Low-scalloped, thick | Medium-scalloped, medium-thick | High-scalloped, thin | 
| Shape of Tooth Crowns | Rectangular | Triangular | |
| Infection at Implant Site | None | Chronic | Acute | 
| Bone Level at Adjacent Teeth | <= 5 mm to contact point | 5.5 to 6.5 mm to contact point | > 7 mm to contact point | 
| Prosthodontic Status of Neighboring Teeth | Virgin | Restored | |
| Width of Edentulous Span | 1 tooth (>= 7 mm) | 1 tooth (< 7 mm) | 2 teeth or more | 
| Soft Tissue Anatomy | Intact | Defective | |
| Bone Volume | Horizontally and vertically sufficient | Horizontally deficient | 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 | Straightforward | 
|---|---|
| Defining Characteristics | One missing tooth to be replaced by an implant-borne prosthesis | 
| Modality | Modality | 
| Placement Protocol | Early or late implant placement | 
| Tooth Site | Tooth site | 
| Socket Morphology | Socket morphology | 
| Socket Integrity | Socket integrity | 
| Bone Volume | Horizontally and vertically sufficient | 
| Anatomic Risk | Low | 
| Esthetic Risk | Low | 
| Complexity | Low | 
| Risk of Complications | Low | 
Prosthodontic SAC classification
| SAC Level | Straightforward | 
|---|---|
| Defining Characteristics | One missing tooth to be replaced by an implant-borne crown | 
| Loading Protocol | Conventional or early | 
| Retention | - | 
| Maxillomandibular Relationship | - | 
| Mesio-Distal Space | - | 
| Inter-Arch Distance | - | 
| Bruxism | - | 
| Esthetic Risk | Low | 
| Provisional Implant-Supported Prosthesis | - | 
| Interim Prosthesis during Healing | - | 
| Occlusion/Articulation | - | 
| Occlusal Scheme/Issues | - | 
Surgical SAC Modifiers
| Periodontal Status | Healthy | 
|---|
Prosthodontic SAC Modifiers
| Soft Tissue Contour and Volume | - | 
|---|
General SAC Modifiers
| Oral Hygiene and Compliance | Good | 
|---|---|
| Access | Adequate | 
| Craniofacial/Skeletal Growth | Completed | 
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