Ppt 1 Flashcards
Most teeth are lost as a result of ?
Dental caries
Periodontal disease
Congenitally absent
Lost as a result of trauma or neoplastic disease
What’s general factors that affect prognosis ?
The overall caries rate of the patient’s dentition indicates future risk
The patient’s understanding and comprehension of plaque-control measures
Patients physical ability to perform those tasks
Analysis of systemic problems and overall health
The history and success of previous dental treatments.
If a patient’s previous dental care has been successful a better prognosis can be anticipated
What’s local factor that affect prognosis ?
The observed vertical overlap of the anterior teeth
Impactions adjacent to a molar
Individual tooth mobility
Root angulation
Root structure
Crown-to-root ratios
How to evaluate clinically partial Edentulism?
Number of lossing teeth
Topography of dental arch defect and role of loosing teeth
Condition of hard tooth tissues and periodontium of remained teeth
Type of occlusion
Time passed after tooth extraction
What’s tooth loss consequence ?
The residual ridge no longer benefits from the functional stimulus
A loss of ridge volume
Bone loss is greater in the mandible and more pronounced posteriorly than anteriorly
Which functional measurements Are closest to the natural state ?
when replacements are fixed partial dentures rigidly supported by teeth or implants
Which functional measurements Are Intermediate in function ?
when replacements are removable and supported by teeth
Which functional measurements Are Lower in function ?
-when replacements are removable and supported by teeth and edentulous ridges
Which functional measurements Are Lowest in function ?
when replacements are removable and supported by edentulous ridges alone
Long span edentolous area require ?
- additional support and stabilization from the tissues of the residual ridge and from the abutment teeth on the opposite side of the arch
- The periodontal membrane area of the abutment teeth for a fixed partial denture must be equal to or greater than the periodontal membrane area of the teeth being replaced
How to manage No Abutment Tooth Posterior To The Edentulous Space ?
- Fixed partial dentures that are supported at only one end produce harmful torquing forces
- When placement of implants is not possible, treatment involves placement of a removable partial denture
When bony ( peridontium ) support for the remaining teeth has been severely compromised what will happen ?
prospective abutments may be unable to support fixed prostheses
How do we deal with Excessive Bone Loss Within The Residual Ridge ?
We have to improve ridge contours
Properly contoured denture bases may be used to support the lips and cheeks, and to reestablish desirable facial contours