Rehabilitating an Edentulous Maxilla with a Fixed Dental Prosthesis Following Provisional Immediate Loading
This case features the flapless computer-guided placement of 7 bone-level implants, distributed to provide maximal support for the prosthetic framework. A rigid one-piece metallic framework was utilized as an interim restoration to reduce the risk of fracture associated with this prosthetic design. As part of the clinical examination, the SAC Assessment Tool was used, resulting in a surgical and restorative risk classification as “complex”.
Surgical SAC classification
Complex
Prosthodontic SAC classification
Complex
Learner Level
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1
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2
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3
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CME/CPD
0.25 hours
Purchase price
10
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General information
| Case Type | Edentulous Maxilla |
|---|---|
| Jaw | Maxilla |
| Area | Full-Arch |
| # of Teeth | - |
| # of Implants | 7 |
| Type of Implants | Two-Piece |
| Attachment | Two-Piece |
| Bone Augmentation | No |
|---|---|
| Augmentation Materials | - |
| Guided Surgery | Yes |
| Soft Tissue Grafting | - |
| 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 | Complex |
|---|---|
| Defining Characteristics | Fully edentulous upper jaw to be rehabilitated with four or more implants |
| Modality | 6+ implants with immediate loading |
| Placement Protocol | - |
| Tooth Site | Tooth site |
| Socket Morphology | Socket morphology |
| Socket Integrity | Socket integrity |
| Bone Volume | Horizontally and vertically sufficient |
| Anatomic Risk | Low |
| Esthetic Risk | High |
| Complexity | High |
| Risk of Complications | High |
Prosthodontic SAC classification
| SAC Level | Complex |
|---|---|
| Defining Characteristics | Fully edentulous upper jaw to be rehabilitated with an implant-borne fixed dental prosthesis |
| Loading Protocol | Immediate |
| Retention | - |
| Maxillomandibular Relationship | - |
| Mesio-Distal Space | - |
| Inter-Arch Distance | - |
| Bruxism | - |
| Esthetic Risk | High |
| 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 | Slightly compromised |
|---|
General SAC Modifiers
| Oral Hygiene and Compliance | Insufficient |
|---|---|
| Access | Adequate |
| Craniofacial/Skeletal Growth | Completed |
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