Replacing a Mandibular Second Premolar with a Chairside-Fabricated Crown
A 32-year-old male patient was referred to our department for a single-tooth replacement with an implant-supported crown. The patient was diagnosed with tooth agenesis at site 45 after extraction of the retained deciduous tooth (85, primary second molar) by his general practitioner. At baseline, the full-mouth plaque score (PI) was 21%; probing pocket depths (PPD) ranged from 1 to 3 mm, and bleeding on probing (BoP) was 17%.
Surgical SAC classification
Straightforward
Prosthodontic SAC classification
Straightforward
Learner Level
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1
|
2
|
3
|
Source
Treatment Guide 11
CME/CPD
0.15 hours
Purchase price
10
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General information
| Case Type | |
|---|---|
| Jaw | Mandible |
| Area | Posterior |
| # of Teeth | 1 |
| # of Implants | 1 |
| Type of Implants | One-Piece |
| Attachment | One-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 | 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 | Sufficient |
|---|---|
| Access | Adequate |
| Craniofacial/Skeletal Growth | Completed |
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