Fundamentals of Fixed Prosthodontics. James C. Kessler
Parfitt GJ. Measurement of the physiological mobility of individual teeth in an axial direction. J Dent Res 1960;39:608–618.
18. McCall JO, Hugel IM. Movable-removable bridgework: Principles and practice as developed by Herman ES Chayes, DDS. Dent Items Interest 1949;71:512–525.
19. Shillingburg HT Jr, Fisher DW. Nonrigid connectors for fixed partial dentures. J Am Dent Assoc 1973;87:1195–1199.
20. Standlee JP, Caputo AA. Load transfer by fixed partial dentures with three abutments. Quintessence Int 1988;19:403–410.
21. Markley MR. Broken-stress principle and design in fixed bridge prosthesis. J Prosthet Dent 1951;1:416–423.
22. Sutherland JK, Holland GA, Sluder TB, White JT. A photoelastic analysis of the stress distribution in bone supporting fixed partial dentures of rigid and nonrigid design. J Prosthet Dent 1980;44:616–623.
23. Landry KE, Johnson PF, Parks VJ, Pelleu GB Jr. A photoelastic study to determine the location of the nonrigid connector in a five-unit intermediate abutment prosthesis. J Prosthet Dent 1987;57:454–457.
24. Picton DC. Tilting movements of teeth during biting. Arch Oral Biol 1962;7:151–159.
25. Khouw FE, Norton LA. The mechanism of fixed molar uprighting appliances. J Prosthet Dent 1972;27:381–389.
26. Norton LA, Profitt WR. Molar uprighting as an adjunct to fixed prostheses. J Am Dent Assoc 1968;76:312–315.
27. Simon RL. Rationale and practical technique for uprighting mesially inclined molars. J Prosthet Dent 1984;52:256–259.
28. Norton LA, Parker WT. Management of repositioned teeth in preparation for fixed partial dentures. J Am Dent Assoc 1970; 81:916–922.
29. Reynolds JM. Abutment selection for fixed prosthodontics. J Prosthet Dent 1968;19:483–488.
30. Hood JA, Farah JW, Craig RG. Modification of stresses in alveolar bone induced by a tilted molar. J Prosthet Dent 1975;34:415– 421.
31. Yang HS, Thompson VP. A two-dimensional stress analysis comparing fixed prosthodontic approaches to the tilted molar abutment. Int J Prosthodont 1991;4:416–424.
32. Smith DE. Fixed bridge restorations with the tilted mandibular second or third molar as an abutment. J South Calif Dent Assoc 1939;6:131–138.
33. Shillingburg HT Jr. Bridge retainers for tilted abutments. N M Dent J 1972;22:16–19.
34. Ewing JE. Re-evaluation of the cantilever principle. J Prosthet Dent 1957;7:78–92.
35. Wright KW, Yettram AL. Reactive force distributions for teeth when loaded singly and when used as fixed partial denture abutments. J Prosthet Dent 1979;42:411–416.
36. Wright WE. Success with the cantilever fixed partial denture. J Prosthet Dent 1986;55:537–539.
37. Goldfogel MH, Lambert RL. Cantilever fixed prosthesis replacing the maxillary lateral incisor: Design consideration. J Prosthet Dent 1985;54:477–478.
38. Schweitzer JM, Schweitzer RD, Schweitzer J. Free-end pontics used on fixed partial dentures. J Prosthet Dent 1968;20:120–138.
39. Nyman S, Lindhe J. Considerations on the design of occlusion in prosthetic rehabilitation of patients with advanced periodontal disease. J Clin Periodontol 1977;4:1–15.
Table 7-1 Types of prostheses used for the replacement of missing teeth
Removable partial denture | Conventional tooth-supported fixed partial denture | Resin-bonded tooth-supported fixed partial denture | Implant-supported fixed partial denture | |
---|---|---|---|---|
Span length | Posterior spans longer than 2 teeth Anterior spans longer than 4 incisors Canine + 2 or more contiguous teeth | Posterior span: 2 or fewer Incisors: 4 or fewer | Single tooth Possible for 2 incisors | Single tooth 2- to 6-unit span |
Span configuration | No distal abutment Multiple or bilateral edentulous spaces | Usually has distal abutment but can be used with short cantilever pontic | Abutments mesial and distal to pontic | No distal abutment Pier in 3+ pontic span All abutments at ends and as pier(s) of long span |
Abutment alignment | Tipped abutments can be tolerated Widely divergent abutment alignment | Less than 25-degree inclination can be accommodated by preparation modification | Less than 15-degree inclination mesiodistally Should be in same faciolingual plane Preparations are not easily modified because of minimal reduction | Need for implant/abutment alignment requires close coordination between surgeon and restorative dentist |
Abutment condition | Short clinical crownsInsufficient abutments | Good if abutments need crowns Nonvital teeth can be used if there is sufficient coronal tooth structure | Defect-free abutments Incisor, premolar replacements | Defect-free abutments requiring no restoration |
Occlusion | More adaptable to irregularities in a healthy opposing natural dentition | Favorable loading (magnitude, direction, frequency, duration) | Cannot be used for incisor replacement in presence of deep vertical overlap | Occlusal forces must be as nearly vertical as possible to prevent unfavorable lateral loading of implants |
Periodontal condition | Can use alternate (secondary) abutments when primary abutments are weakened | Good alveolar bone support Crown-root ratio 1:1 or better No mobility Favorable root morphology Provides rigid stabilization | No mobility Periodontal splints (with auxiliary resistance in tooth preparation) | Dense bone |
Ridge form | Gross tissue loss in residual ridge | Moderate resorption No gross soft tissue defects | Moderate resorption No gross soft tissue defects | Broad, flat ridge |
General features | Dry mouth: poor prognosis Limited patient finances Acceptable oral hygiene Reliable recall candidate Treatment simplification Advanced age Systemic health problems More adaptable to dentition in transition to edentulous state | Dry mouth: high caries risk Muscular discoordination Mandibular tori Palatal soft tissue lesions Large tongue Exaggerated gag reflex Unfavorable attitude toward RPD Patient can’t cope with aging, tooth loss Favorable opposing occlusion: removable prosthesis or periodontally weakened natural dentition may permit FPD in less than optimal situations Must be within dentist’s skills | Well suited for young patients Can be used for replacing molars if masticatory muscles are not too well developed | Able to survive in dry mouth May be better choice if teeth will require extensive treatment and will still be weak, questionable abutments Unfavorable attitude toward RPD Must be within dentist’s skills |
RPD, removable partial denture; FPD, fixed partial denture.
8 Fixed Partial Denture and Implant Configurations
The replacement of missing teeth with fixed restorations has changed considerably in the last 20 years. No longer is it simply a choice between a fixed partial denture and a removable partial denture. Osseointegrated