Case

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Replacement of Two Central Incisors with Non-Splinted Crowns on Bone-Level Implants

Urs C Belser, Daniel Buser

A 27-year-old female patient was referred to the Clinic of Oral Surgery and Stomatology of the University of Bern due to acute pain in the region of her two maxillary central incisors. The patient was in good general health. She reported a bicycle accident approximately 5 years earlier in which teeth 11 and 21 had been traumatized but neither fractured nor displaced. Several weeks after the accident, endodontic treatment was performed on both central incisors, although the patient did not recall the precise reasons for this decision. About 2 years ago, non-vital bleaching had been conducted, in accordance with the “walking-bleach” principle, due to progressive discoloration of teeth 11 and 21.
Surgical SAC classification
Advanced
Prosthodontic SAC classification
Advanced
Source
Treatment Guide 6
Purchase price
10 Academy Coins
CPD/CME
0.15 hours
Publication date: Oct 13, 2014 Last review date: Apr 10, 2018 Next review date: Apr 10, 2021

General information

Case Type Short Space
Jaw Maxilla
Area Anterior
# of Teeth 2
# of Implants 2
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 Up to three missing teeth to be replaced with an implant-borne prosthesis or prostheses
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 Up to three missing teeth to be replaced with an implant-borne restoration or restorations
Loading Protocol Conventional or early
Retention Screw-retained, with 2 unsplinted implants Screw-retained, with 2 unsplinted implants
Maxillomandibular Relationship -
Mesio-Distal Space Adequate for the replacement of all missing teeth
Inter-Arch Distance -
Bruxism Absent
Esthetic Risk Medium
Provisional Implant-Supported Prosthesis Prosthodontic margin >3 mm apical to mucosal crest Prosthodontic margin >3 mm apical to mucosal crest
Interim Prosthesis during Healing Removable Removable
Occlusion/Articulation Harmonious
Occlusal Scheme/Issues -

Surgical SAC Modifiers

Periodontal Status Healthy

Prosthodontic SAC Modifiers

Soft Tissue Contour and Volume Ideal

General SAC Modifiers

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

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