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Guided Bone Regeneration (GBR) with a Particulated Autologous Graft and a ePTFE-Reinforced Membrane for Vertical Augmentation of a Single-Tooth Edentulous Space in the Esthetic Zone

Paolo Casentini

A 47-year-old Caucasian woman with a single-tooth edentulous space at the site of the left maxillary canine was referred for treatment. She had undergone traumatic extraction of this impacted canine several months before referral. Her chief complaint was the dissatisfying appearance of her smile. The patient desired a stable and esthetic rehabilitation of the site. Her dental history showed no evidence of periodontal disease or bruxism. She had no systemic diseases, was not taking any medications, and did not smoke. The extraoral examination revealed a high lip line and an inadequate soft-tissue volume at the defective canine site. Large black triangles were visible between the canine and its adjacent teeth.

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 Staged|Vertical
Augmentation Materials Autogenous chips|Membrane
Guided Surgery No
Soft Tissue Grafting Simultaneous
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 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 vertically or deficient vertically AND horizontally
Anatomic Risk High
Esthetic Risk High
Complexity High
Risk of Complications High

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 Cemented, with prosthesis margin < 3mm submucosal Cemented, with prosthesis margin < 3mm submucosal
Maxillomandibular Relationship Angle Class I and III
Mesio-Distal Space Symmetry +/- 1 mm of contra-lateral tooth
Inter-Arch Distance -
Bruxism -
Esthetic Risk High
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 Significantly deficient

General SAC Modifiers

Oral Hygiene and Compliance Good
Access Adequate
Craniofacial/Skeletal Growth Completed

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