RPD Manual 11 - Removable Prosthodontics - Dalhousie University

Table of Contents - ii
Major Connectors ....................................................................................................................... 32
Functions of a Major Connector ............................................................................................... 32
Requirements of a Major Connector ......................................................................................... 32
I. Mandibular Major Connectors ............................................................................................ 33
Lingual Bar ....................................................................................................................... 33
Lingual Plate (Linguoplate) .............................................................................................. 34
Continuous Bar Retainer (Kennedy Bar, Double Lingual Bar) ........................................ 35
Labial Bar ......................................................................................................................... 35
II. Maxillary Major Connectors .............................................................................................. 35
Anterior-Posterior Palatal Strap ........................................................................................ 35
Full Palatal Plate ............................................................................................................... 36
Single Palatal Strap .......................................................................................................... 36
Anterior Palatal Plate ....................................................................................................... 37
Minor Connectors ....................................................................................................................... 38
Functions ................................................................................................................................... 38
Basic Types of Minor Connectors: ........................................................................................... 38
Gridwork Design ...................................................................................................................... 41
Direct and Indirect Retainers .................................................................................................... 43
Extra-Coronal Direct Retainers ................................................................................................ 43
Requirements of Direct Retainers ............................................................................................. 44
Factors affecting the magnitude of retention ............................................................................ 44
Direct Retainers For Tooth-Borne RPD’s ................................................................................ 46
1. Circumferential (Circle or Akers) clasp ........................................................................... 46
2. Ring clasp ........................................................................................................................ 47
3. Embrasure (Double Akers) Clasp .................................................................................... 47
4. "C" clasp (Hair-pin or Reverse action) ............................................................................ 48
Direct Retainers For Tooth and Tissue Borne RPD's ............................................................... 49
1. Bar Clasps ........................................................................................................................ 49
2. The R-P-I Clasp ............................................................................................................... 50
3. Combination Clasp .......................................................................................................... 52
4. RPA Clasp ...................................................................................................................... 52
The Distal Rest Concept ....................................................................................................... 52
Direct Retainer Selection .......................................................................................................... 55
Indirect Retainers ...................................................................................................................... 56
Denture Bases and Replacement Denture Teeth ..................................................................... 59
Functions ................................................................................................................................... 59
Materials ................................................................................................................................... 59
Flange Extension .................................................................................................................. 60
Acrylic Resin Finish Lines ................................................................................................... 61
Partial Denture Replacement Teeth ...................................................................................... 61