Empfohlen
Weitere ähnliche Inhalte
Was ist angesagt?
Was ist angesagt? (20)
Ăhnlich wie Bridge failure
Ăhnlich wie Bridge failure (20)
KĂźrzlich hochgeladen
KĂźrzlich hochgeladen (20)
Bridge failure
- 1. Bridge Failure Dr. Aneeqa Yaqub Dr. Moazam Ali
- 2. Manifestations of failure ď Pain ď Inability to function ď Dissatisfaction with esthetics ď Broken teeth and/or restoration ď Inflammatory swelling ď Bad taste ď Bad breath ď Bleeding gums ď Anxiety
- 3. Causes of fixed prosthesis failure ď Improper case selection ď Faulty diagnosis and treatment plan ď Inaccurate clinical or laboratory procedures ď Poor patient care and maintenance following insertion
- 4. Classification of fixed prosthesis failure Biological Esthetic Mechanical ⢠Discomfort ⢠At the time of ⢠Caries cementation ⢠Pulp injury ⢠Delayed ⢠Periodontal ⢠Looseness or esthetic failure breakdown dislodgement ⢠Occlusal ⢠Prosthesis problems fracture ⢠Tooth ⢠Occlusal wear perforation or perforation ⢠Tooth fracture
- 6. Biological Failures Occlusal problems Caries ⢠Methods of Periodontal breakdown detection ⢠Detection ⢠Inadequate abutment ⢠Management teeth ⢠Periodontally affected abutment teeth ⢠Poor oral hygiene ⢠Improperly constructed prosthesis
- 7. Periodontal breakdown Caries Occlusal problems
- 8. Biological Failures Tooth perforation Discomfort ⢠Pressure on soft tissue ⢠Traumatic occlusion ⢠Torque ⢠Cervical hypersensitivity
- 9. Discomfort Tooth perforation
- 10. Biological Failures Abutment fracture Pulp injury ⢠Coronal ⢠Root ⢠Over heating ⢠Over reduction ⢠Minute pulp exposure ⢠Inadequate protection ⢠Recurrent caries
- 11. Pulp injury Abutment fracture
- 13. Mechanical Failures Occlusal wear or perforation Looseness or dislodgement ⢠Lack of retention Prosthesis fracture o Faulty preparation o Improper design ⢠Joint fractures o Improper ⢠Facing fractures construction ⢠All ceramic crown ⢠Recurrent caries fracture ⢠Mobility o Faulty ⢠Torque preparation ⢠Faulty cementation o Faulty construction o Faulty cementation ⢠Post fracture
- 14. Prosthesis fracture Occlusal wear Looseness
- 16. Esthetic Failures Delayed esthetic failures ⢠Gingival recession At the time of cementation ⢠Sub pontic tissue shrinkage ⢠Actual failures ⢠Periodontal surgery o Color mismatch ⢠Porosity o Poor tooth contour, marginal ⢠Drifting of anterior roughness & extension teeth o Metal display in partial ⢠wear coverage o Improper pontic placement o Porcelain fracture during cementation ⢠Color blindness ⢠Unrealistic complains by the pt. o Inadequate communication o Unrealistic expectations of pt. o Dysmorphophobia
- 18. Avoiding failures ď Caution at the planning stage ď Confirmation of diagnosis and treatment plan for inexperienced operator ď Expertise of the technician ď Treatment of preoperative problems ď Search for the primary cause of failure rather than the apparent
- 19. When the prognosis is questionable ??? The methods used to facilitate re-treatment are: ď Use of temporary cement ď Design of prosthesis for possible future addition ď The placement of a rest seat for possible future use ď Specified undercut or guide plane of a crown, even when denture is not planned ď Planning and noting solder joint placement ď Recording of shades ď Recording of cement used ď Retention of working casts and provisional restorations
- 21. CASE # 1 â˘75 years old â˘6- units bridge Carious â˘Satisfactory for 9 yrs â˘Prefer not to have a new Abutments one â˘Clinical examination: carious abutments 11, 13 Management â˘Caries removal â˘Root canal treatment â˘Post and core done for each tooth â˘Bridge lasted for the remaining 6 years
- 23. CASE # 2 â˘Advanced periodontitis Periodontal â˘Complicated by tooth loss and mobility â˘Had a partial denture (not coping well with it) Breakdown â˘Wishes to consider a fixed restoration option â˘For health reasons implants were not a practical option Management â˘Teeth prepared for full crowns â˘Telescopic crowns with parallel path of insertion cemented permanently ⢠One piece fixed bridge fabricated over the crowns
- 25. THANK YOU