Case

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Clinical Case Report

Removal of a Malpositioned Implant and Direct New Implant Placement with Simultaneous Contour Augmentation using GBR

Daniel Buser, Urs C Belser

A 35-year old female patient was referred to the Department of Oral Surgery and Stomatology at the University of Bern, Switzerland, for examination of an implant site that had exhibited clinical signs of slightly delayed wound healing. In addition, the referring clinician found no evidence for a facial bone wall when she raised a flap to gain access to the implant for abutment connection. Four months earlier, she had inserted a bone-level implant in a single-tooth gap, where the lateral incisor had been extracted due to a chronic periapical lesion on the mesial aspect of the root. Implant placement was combined with simultaneous bone augmentation using deproteinized bovine bone mineral (DBBM, Bio-Oss®; Geistlich, Wolhusen, Switzerland) and a collagen membrane (Bio- Gide®; Geistlich), followed by primary wound closure. The patient also provided the postsurgical radiograph that displayed the implant with a 3.5-mm healing cap.

Surgical SAC classification
Advanced
Prosthodontic SAC classification
Advanced
Source
Treatment Guide 8
Purchase price
10 Academy Coins
CPD/CME
0.25 hours

Recommended content

General information

Case Type Single-Tooth Space
Jaw Maxilla
Area Anterior
# of Teeth 1
# of Implants 1
Type of Implants Two-Piece
Attachment Two-Piece
Bone Augmentation Horizontal|Simultaneous
Augmentation Materials Autogenous chips|Xenogenous|Membrane
Guided Surgery No
Soft Tissue Grafting None
Abutment Type CAD/CAM
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 Advanced
Defining Characteristics One missing tooth to be replaced by an implant-borne prosthesis
Modality -
Placement Protocol Early or late implant placement
Tooth Site -
Socket Morphology -
Socket Integrity -
Bone Volume Deficient horizontally, allowing simultaneous augumentation
Anatomic Risk Low
Esthetic Risk Medium
Complexity Moderate
Risk of Complications Moderate

Prosthodontic SAC classification

SAC Level Advanced
Defining Characteristics One missing tooth to be replaced by an implant-borne crown
Loading Protocol Conventional or early
Retention Screw-retained Screw-retained
Maxillomandibular Relationship Angle Class I and III
Mesio-Distal Space Symmetry +/- 1 mm of contra-lateral tooth
Inter-Arch Distance -
Bruxism -
Esthetic Risk Medium
Provisional Implant-Supported Prosthesis Prosthodontic margin > 3 mm apical to mucosal margin Prosthodontic margin > 3 mm apical to mucosal margin
Interim Prosthesis during Healing Fixed Fixed
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 Good
Access Adequate
Craniofacial/Skeletal Growth Completed
Publication date: Apr 28, 2016 Last review date: Apr 22, 2022 Next review date: Apr 22, 2025

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