RPD Manual 11 - Removable Prosthodontics - Dalhousie University

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! Anterior Border of the Ramus - Do not extend dentures posterior to the pear shaped pad onto this structure, or discomfort will result Anatomy Tour - 9 ! External Oblique Ridge - Do not extend dentures laterally from the buccal shelf onto this structure or discomfort will result ! Mylohyoid Ridge (Internal Oblique Ridge) - Origin of the mylohyoid muscle, largest muscle in the floor of the mouth, which influences the length of the flange of the lingual flange of a denture. - Can be quite prominent, and/or sharp, requiring relief in the final denture, particularly toward the posterior. ! Identify, palpate and indicate the colleague with the most prominent mylohyoid ridge ________________________ ! Lingual Tori Raised bony structures that may require relief when covered by a denture. Covered with thin mucosa and can ulcerate easily if impinged upon ! Genial Tubercles (no demo) - Attachment for the genioglossus muscle in the midline of the lingual vestibule. - When the residual ridge is highly resorbed the tubercles may be higher than the ridge and present problems for comfort. FRENA (singular = frenum): - Frena must be relieved in a denture to allow for movement, without impingement. - If frena are very prominent, adequate relief can weaken a denture. - If too much relief is provided, retention is lost. - Frena can be displaced easily with viscous impression materials such as alginate, so it is important to check their prominence intraorally. ! Pull the cheeks and lips of a colleague to see how frena change shape. ! Note the shape, size and direction of the following and look on the distributed denture for corresponding areas to these frena: ! maxillary labial ! maxillary buccal ! mandibular labial ! mandibular buccal ! lingual - these are broader in shape - these are narrow in shape ! Who has the most prominent frena in your group? _____________________________
Anatomy Tour - 10 OTHER STRUCTURES: ! Pterygo-Mandibular Raphe - Connects from the hamulus to the mylohyoid ridge. - Rarely significant, but when prominent, it can cause pain, or loosening of the denture, requiring a relief “groove ” by the hamular notch ! Have partner open wide as possible -identify raphe. ! Is it prominent? _______________________ ! Retrozygomal Fossae (Space) - Palpate the zygomatic process in the buccal vestibule just buccal to the first maxillary molar. - The vestibular space posteriorly is the retrozygomal fossae. - It is commonly incompletely captured in preliminary impressions without a syringe technique - this leads to a short flange and non-retentive denture. ! Coronoid Process - Place mirror head lateral to tuberosity, have partner move mandible to opposite side. - Note binding or pain during this excursion. - This gives some indication of the width of the space available for a denture flange. - If the flange is made too thick, it will cause pain and sometimes dislodgment.
Page 1 and 2: Removable Partial Denture Manual Ro
Page 3 and 4: Table of Contents Table of Contents
Page 5 and 6: Table of Contents -iii Principles o
Page 7 and 8: Table of Contents - 2 4. poor progn
Page 9 and 10: Table of Contents - 4 F. Classifica
Page 11 and 12: Anatomy Tour - 6 Anatomy Tour for C
Page 13: Anatomy Tour - 8 ! Soft Palate ! Vi
Page 17 and 18: Preliminary Impressions - 12 6. Wra
Page 19 and 20: Surveying, Path of Insertion, Guidi
Page 29 and 30: Rests and Rest Seats - 24 A. Defini
Page 31 and 32: Rests and Rest Seats - 26 (d) The f
Page 33 and 34: Rests and Rest Seats - 28 Correct P
Page 35 and 36: Rests and Rest Seats - 30 2. The in
Page 37 and 38: Major Connectors - 32 Definition Ma
Page 39 and 40: Major Connectors - 34 3. Position -
Page 41 and 42: Major Connectors - 36 B. Full Palat
Page 43 and 44: Minor Connectors - 38 Definition Mi
Page 45 and 46: Minor Connectors - 40 The junction
Page 47 and 48: Minor Connectors - 42 When the dent
Page 49 and 50: Direct and Indirect Retainers - 44
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Denture Bases - 60 Advantages: Bead
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Denture Bases - 62 of the natural d
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Principles of Partial Denture Desig
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Design Session - 72 Classification
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Clinical Protocol, Final Impression
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Clinical Protocol, Final Impression
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Framework Adjustment - 84 Removable
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Framework Adjustment - 86 3. Silico
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Framework Adjustment - 88 after adj
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Jaw Relations, Altered Cast Techniq
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Jaw Relations, Altered Cast Techniq
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Interim Removable Partial Dentures
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Coordinating Fixed and Removable Pr
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RPD Checklist - 98 7. Abutment Modi
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RPD Checklist - 100 16. Baseplate a
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Summary of Design Principles for Re
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RPD Manual 11 - Removable Prosthodontics - Dalhousie University

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