the dilemma of the missing anterior single tooth - restorative parameters
DESCRIPTION
By : Shankar Iyer DDS, MDS, Asst. Clinical Professor, AEPP, NYU, UMDNJ. More on - http://implantforme.comTRANSCRIPT
The Dilemma of The Missing Anterior Single Tooth
- Restorative Parameters
Shankar Iyer DDS, MDSAsst. Clinical Professor, AEPP, NYU, UMDNJ
10
Evidence For Single Tooth Implants“Although posterior single-tooth replacement is a relatively new treatmentalternative, many studies have been published since 1990, and survivalrates reported range from a low of 94.6% to a high of 100% for a 1 to 15 years. 35-45”
Misch CE, Contemporary Implant Dentistry III Ed. 2008 Mosby pp 7
Evidence Based Decision• “Systematic Review of The Scientific Literature failed to
demonstrate any direct comparative studies assessing clinical performance of single implant-supported crowns and tooth-supported fixed partial dentures”
Salinas TJ, Eckert SE. In Patients Requiring Single-Tooth Replacement, What Are the Outcomes of Implant – as Compared to Tooth-Supported Restorations? IJOMI , 22: Suppl, 71-107, 2007
Survival Rates of Options*
FPDTooth supported
FPD Implant Supported
Implant Supported Single Crown
Five Years 93.8% 95.2% 94.5%
Ten Years 89.2% 86.7% 89.4%
*No RCTs only observational studies and case cohortsPaetursson BJ. Osseointegration and Dental Implants ed. Jokstad A. 2009, Wiley-Blackwell, pp 14 - 23.
“While Single Crowns on vital teeth have the best prognosis, those on endodontically treated teeth have a slightly poorer prognosis over 10 years. Crowns on teeth with posts and cores and implant-supported Single Crowns
displayed the highest incidence of (biologic and technical) failures and complications”
Schmidlin K, et al. Complications and failure rates in patients treated for chronic periodontitis and restored with single crowns on teeth and/or
implants, Clinical Oral implants research,21:55-557, 2010
Paradigms For Decision Making
INDUCTION
DEDUCTION
SEDUCTION
Clinician’s Experience
Evidence Based
Corporate Lure
Factors Influencing DecisionsScientific Criteria• Long-term Data• Structural Durability
Clinical Criteria
Factors Influencing DecisionsScientific Criteria• Long-term Data• Structural Durability• Periodontal Factors
Clinical Criteria
Factors Influencing DecisionsScientific Criteria• Long-term Data• Structural Durability• Periodontal Factors• Endodontic Factors
Clinical Criteria
Factors Influencing DecisionsScientific Criteria• Long-term Data• Structural Durability• Periodontal Factors• Endodontic Factors• Biomaterials and
Biomechanics
Clinical Criteria
Factors Influencing DecisionsScientific Criteria• Long-term Data• Structural Durability• Periodontal Factors• Endodontic Factors• Biomaterials and
Biomechanics
Clinical Criteria• Trauma
Factors Influencing DecisionsScientific Criteria• Long-term Data• Structural Durability• Periodontal Factors• Endodontic Factors• Biomaterials and
Biomechanics
Clinical Criteria• Trauma• Esthetics
Factors Influencing DecisionsScientific Criteria• Long-term Data• Structural Durability• Periodontal Factors• Endodontic Factors• Biomaterials and
Biomechanics
Clinical Criteria• Trauma• Esthetics• Preservation of Natural
Teeth
Factors Influencing DecisionsScientific Criteria• Long-term Data• Structural Durability• Periodontal Factors• Endodontic Factors• Biomaterials and
Biomechanics
Clinical Criteria• Trauma• Esthetics• Preservation of Natural
Teeth• Time
Factors Influencing DecisionsScientific Criteria• Long-term Data• Structural Durability• Periodontal Factors• Endodontic Factors• Biomaterials and
Biomechanics
Clinical Criteria• Trauma• Esthetics• Preservation of Natural
Teeth• Time• Cost
Papillary Prediction
Tarnow DP et al. The effect of the distance from the contact point to the crest of Bone on the presence or absence of the interproximal dental papilla. J Periodontol 63:995-996, 1992Choquet V, Tarnow DP et al. Clinical and radiographic evaluation of the papilla level adjacent to single-tooth dental implants. A retrospective study in the maxillary anterior region. J Peridontol 72:1364-1371, 2001
Teeth PreparationFPD Implant
Treatment Considerations
14Tooth PreparationSingle Tooth Implant3 Unit FPDRisk Assessment
2-31-2Augmentation22Bone Support14Teeth Preparation31Esthetics
Single Tooth Implant3 Unit FPDRisk Assessment
2-31Provisionalization2-31-2Augmentation22Bone Support14Teeth Preparation31Esthetics
Single Tooth Implant3 Unit FPDRisk Assessment
2-31Provisionalization2-31-2Augmentation22Bone Support14Teeth Preparation31Esthetics
Single Tooth Implant3 Unit FPDRisk Assessment
11Long Term Studies
2-41-3Time
2-31Provisionalization2-31-2Augmentation22Bone Support14Teeth Preparation31Esthetics
Single Tooth Implant3 Unit FPDRisk Assessment
11Long Term Studies
2-42-3Cost2-41-3Time
2-31Provisionalization2-31-2Augmentation22Bone Support14Teeth Preparation31Esthetics
Single Tooth Implant3 Unit FPDRisk Assessment
11Long Term Studies
2-42-3Cost2-41-3Time
2-31Provisionalization2-31-2Augmentation22Bone Support14Teeth Preparation31Esthetics
Single Tooth Implant3 Unit FPDRisk Assessment
11Long Term Studies
3 - 42Trauma
11Overall Predictability
2-42-3Cost2-41-3Time
2-31Provisionalization2-31-2Augmentation22Bone Support14Teeth Preparation31Esthetics
Single Tooth Implant3 Unit FPDRisk Assessment
11Long Term Studies
3 - 42Trauma
The Dilemma
Mesio-Distal Width• Loss of Golden Proportion
Loss of Anterior Coupling• Attrition
Atrophic Ridge #9 site• Lack of bucco-lingual width • Multiple restorations
Treatment Considerations
31Predictability
32Cost31Time
31Provisionalization31Augmentation22Bone Support44Teeth Preparation31Esthetics
Single Tooth Implant3 Unit FPDRisk Assessment
22Long Term Results
32Trauma
The Dilemma
Atrophic Ridge• Inadequate Bucco-lingual width
Root Proximity• Inadequate Mesio-distal width
Recession• Compromised Emergence profile
Treatment Considerations
21Predictability
32Cost31Time
22Provisionalization31Augmentation22Bone Support13Teeth Preparation31Esthetics
Single Tooth Implant3 Unit FPDRisk Assessment
11Long Term Results
31Trauma
Close root proximity• Converging roots
Esthetics• High smile line
Post Orthodontic result• Inadequate space
Treatment Considerations
31Predictability
32Cost31Time
31Provisionalization31Augmentation22Bone Support14Teeth Preparation31Esthetics
Single Tooth Implant3 Unit FPDRisk Assessment
22Long Term Results
32Trauma
The Dilemma
Non restorable root• Vertical Fracture
Healthy abutments• No restorations
Distinct Papillae• Esthetic Demands
Treatment Considerations
11Predictability
22Cost21Time
11Provisionalization21Augmentation22Bone Support14Teeth Preparation11Esthetics
Single Tooth Implant3 Unit FPDRisk Assessment
11Long Term Results
22Trauma
The Dilemma
Space Availability• Mesio Distal Width
Healthy abutments• No restorations
Thin biotype• Esthetic Demands
Treatment Considerations
12Predictability
32Cost21Time
21Provisionalization21Augmentation22Bone Support14Teeth Preparation11Esthetics
Single Tooth Implant3 Unit FPDRisk Assessment
22Long Term Results
32Trauma
The Dilemma
Extreme bone loss• Loss of buccal plate
3 – D loss• Loss of Soft Tissue
Esthetic Demands• High Smile Line
Treatment Considerations
23Predictability
32Cost21Time
21Provisionalization22Augmentation22Bone Support14Teeth Preparation11Esthetics
Single Tooth Implant3 Unit FPDRisk Assessment
22Long Term Results
32Trauma
The Dilemma
Extreme bone loss• Inadequate width
3 – D loss• Loss of Soft Tissue
Esthetic Demands• Metallic Hue
31Predictability
32Cost31Time
11Provisionalization41Augmentation42Bone Support13Teeth Preparation
1-21EstheticsSingle Tooth Implant3 Unit FPDRisk Assessment
22Long Term Results
32Trauma
The Dilemma
Non restorable root• Horizontal fracture
Healthy abutments• No restorations
Esthetic Demands• High Smile Line
Treatment Considerations
11Predictability
22Cost2-32Time
11Provisionalization21Augmentation22Bone Support14Teeth Preparation
1-21EstheticsSingle Tooth Implant3 Unit FPDRisk Assessment
22Long Term Results
22Trauma
Restoring Category I Treatment Sequence
• Fabrication of Removable Occlusal overlay appliance at increased vertical
Chang SW, Romberg E, Driscoll CF, Tabaco M. An In Vitro evaluation of the Reliability and validity of an electronic pantograph by testing with five different
Articulators, J Prosthet Dent 2004;92:83-9“The pantograph was determined to be both reliable and valid”
The Dilemma
Failing Restoration• Repeated Decementations
Healthy abutments• No restorations
Patient Factors• Emotional Intolerance
Treatment Considerations
11Predictability
21Cost2-31Time
11Provisionalization21Augmentation22Bone Support14Teeth Preparation
1-21EstheticsSingle Tooth Implant3 Unit FPDRisk Assessment
22Long Term Results
22Trauma