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1、Introduction to Fixed Prosthdontics,Wael Al-Omari.BDS,MDentSci,PhD,Definition of Fixed Prosthodontics,Fixed Prosthodontic Treatment involves the replacement and restoration of teeth with by artificial substitutes that are not readily removable from the mouth,Scope of Fixed Prosthodontics,Restoration
2、 of single tooth with a cast crown.Replacement of one or more missing teeth with a fixed partial denture(FPD).Rehabilitation of the entire occlusion.,Aims of Fixed Prosthodontics,The aims of fixed prosthodontic treatments are to:Restore Function and masticationRestore aestheticsMaintain health and i
3、ntegrity of dental archSupport the treatment of problems related to TMJ,Terminology,Crown:A cemented extracoronal restoration that covers or veneers the outer surface of the clinical crown:1-Full or complete veneer crown 2-Partial veneer crown 3-Laminate VeneersInlays and Onlays,Full Crown,Partial C
4、rown,Laminate Veneers,Inlay,Onlay,Fixed Partial Denture(PDF)or Bridge:Defined as a prosthetic appliance permanently attached to remaining teeth,which replaces one or more missing teeth.Components of FPD:Abutment:A tooth serving as attachment to FPDPontic:The artificial tooth suspended from abutment
5、teethRetainer:Extracoronal restorations cemented to prepared abutment teethConnector:rigid o non-rigid joint connection between the pontic and the retainer,Components of fixed partial denture,A bridge found in a mummy,Diagnosis,HistoryTMJ/Occlusal evaluationIntraoral examinationDiagnostic castsRadio
6、graphic examination,History,Chief ComplaintInfectious Disease:Hepatitis and AIDS.Non-Infectious DiseaseAllergies to drugs,anesthetic solutions,Allergy to dental materials:impression materials,Nickel containing materials.MedicationsCardiovascular diseases:hypertension,coronary heart disease-No epinep
7、hrineIndications for antibiotic prophylaxisPatients on coagulantsEpilepsy Diabetes MellitusXerostomia,TMJ/Occlusal Evaluation,A prerequisite to fixed prosthodontic treatment is a healthy joint and supporting skeletal musculature.Examine occlusion:normal versus dysfunctionalFrequent occasion of head,
8、neck and shoulder pain should be investigated.,Assessment of TMJ,Clicking,crepitation,limitation of movement on opening,closing,and laterally,limitation of mouth opening.Palpation of the joint Parafunctional activity Assessment of musculature:palpation of masseter,temporalis,medial pterygoid,lateral
9、 pterygoid,trapezius and sternocleidomastoid musclePt.to indicate the area that hurts,Intraoral examination,Periodontal examination:1-General Oral Hygiene 2-Periodontal condition 3-Gingival inflammation 4-Attached gingiva 5-Pocket and attachment level 6-Mobility,Restorative condition:1-Caries extens
10、ion 2-Presence of faulty restoration 3-Suitability of existing prostheses.4-Vitality Occlusal examination 1-presence of wear facet 2-Occlusal interferences 3-Interocclusal relationship.4-Deviation 5-Anterior and posterior guidance Examination of edentulous ridge,Diagnostic casts,Study casts made fro
11、m stable alginate impression accurate,reproducible without positive nodulesArticulation using semiadjustable articulators is recommendedProvide information about edentulous ridge,occlusion,abutment length and inclination arch curvature,drifting and rotationOcclusal analysis.Planning for the pontic s
12、ize and designDiagnostic wax-up,Radiographic Evaluation,Signs of primary or recurrent cariesPresence pf periapical lesionQuality of existing endodontic treatmentAlveolar bone levelCrow:root rationLength,configuration and direction of rootsWidening of periodontal membranePresence of root tips or pathology in the edentulous area,Protection against infectious Diseases,Hepatitis and AIDSTreat each patient as being potentially infectious.Vaccination.Rubber gloves,surgical mask,face shield,protective eyeglasses and protective uniform.Disinfect impression,and laboratory appliances,
