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  • Review ofRemovable

    Partial Dentures

  • Review of

    RemovablePartial Dentures

    Lovely MMDS(Prosth) Dip NB (Prosth)

    Associate Professor and HOD In-chargeSree Mookambika Institute of Dental Sciences

    Kulasekharam, Tamil Nadu

    JAYPEE BROTHERSMEDICAL PUBLISHERS (P) LTD.

    New Delhi

  • Published byJitendar P VijJaypee Brothers Medical Publishers (P) LtdEMCA House, 23/23B Ansari Road, DaryaganjNew Delhi 110 002, IndiaPhones: +91-11-23272143, +91-11-23272703, +91-11-23282021,+91-11-23245672 Fax: +91-11-23276490, +91-11-23245683e-mail: jpmedpub@del2.vsnl.net.in, jaypee@jaypeebrothers.comVisit our website: www.jaypeebrothers.com

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    Review of Removable Partial Dentures

    2005, Lovely MAll rights reserved. No part of this publication should be reproduced, stored in aretrieval system, or transmitted in any form or by any means: electronic, mechanical,photocopying, recording, or otherwise, without the prior written permission of theeditor and the publisher.

    This book has been published in good faith that the material provided by editoris original. Every effort is made to ensure accuracy of material, but the pub-lisher, printer and editor will not be held responsible for any inadvertent error(s).In case of any dispute, all legal matters are to be settled under Delhi jurisdictiononly.

    First Edition: 2005

    ISBN 81-8061-577-4Typeset at JPBMP typesetting unitPrinted at Gopsons Papers Ltd., A-14, Sector 60, Noida

  • Dedicated toMy Almighty GOD

    andMy Family

  • FOREWORD

    The ever-increasing number of textbooks and other literature,which is available for reference to the Dental profession, eachyear makes it difficult for the average undergraduate dentalstudent to prepare adequately for their examinations.

    Often, the diverging views of the authors, on a particularsubject, leave the candidates in confusion regarding the correctanswer to be given. This is more evident when answering essayand short note type questions.

    Dr. Lovely has taken great pains to tackle this problem byarriving at acceptable answers to the above-mentioned typesof questions. The systematic and topic-wise layout of theanswers makes it easy for the students to reproduce.

    Even though many guidebooks are available in the marketto help the students to answer the MCQ type questions, this isto my knowledge the first such book to guide the students inanswering questions in the essay and short note format.

    I am happy to introduce Review of Removable PartialDentures to the present undergraduate students as well as theDental Profession in general. I hope it will lend a helping handto many aspirants of higher education in Dentistry.

    Prof. George Paulose MDS (Prosthodontics)Principal, PMS Dental College,

    Golden Hills, Vengode, Vattapara,Trivandrum

  • PREFACE

    Review of Removable Partial Dentures is the second book inthe examination review series in Prosthodontics being broughtout as study aids for the undergraduate dental studentappearing for the BDS university examinations.

    It is meant as a continuation of the first book Review ofComplete Dentures which was published earlier and is alsosimilarly intended as a revision tool for students before theuniversity examinations. However, I hope that this book willalso be useful for practising dentists and postgraduate studentsto keep up with the latest in the subject.

    This book helps the student to get an idea of how thequestions are framed and how to answer in a structured manner.The questions in this book are from actual universityexamination question papers sourced from all over the country.The answers are formulated after much painstaking referencewith all the standard textbooks in Removable Partial Dentures.

    The inspiration for this book was the need that I myselffelt, as a student, for such a revision tool, just prior to myexamination, and therefore, I hope that the present studentswill take full benefit of it.

    I thank God for enabling me to bring out this book in time.I especially thank Prof. K. Chandrasekharan Nair for hisinvaluable help and time in going through and correcting theproofs of this review. Thanks are due to Dr. Krishna MohanReddy, Dr. Binoy, Dr. Murukan, Dr Jitendra Jethwani,Dr. Gayathri and all of my friends and colleagues all over Indiawho sent me question papers from their Universities. Specialthanks to my department colleague, Dr. James. R. Rex, for hishelp in drawing the diagrams, which are included in this review.I also thank my department colleagues Dr. Mohan Kumar,

  • Dr. K.C. Nayar, Dr. Prashanth, Dr. Seema and Dr. Akhila fortheir encouragement and help. Last but not least, I thank myhusband, parents and in-laws for their encouragement andsupport.

    Lovely M

    x Review of Removable Partial Dentures

  • CONTENTS

    ESSAYS ........................................................................... 1-158Explain the importance of diagnostic and treatmentplanning phases in RPD ................................................................ 3

    List various classifications of RPD and the basis forclassifying partially edentulous situation. Enumeratemerits of Kennedys classification ............................................... 10

    Discuss various classifications of partially edentulous ridge.Explain Kennedy Applegates modification ............................... 12

    Define major connector. Explain in detail its requirements.Describe maxillary major connectors in detail .......................... 17

    Describe mandibular major connectors. Add a note on theadvantages and disadvantages of each mandibular majorconnector ....................................................................................... 24

    Explain in detail various types of minor connectors.Add a note on the functions of minor connector ......................... 30

    Define a direct retainer. List the functions of a circumferentialclasp and various parts as related to function. Describe thevarious types of retainers ............................................................ 37

    Enumerate various factors affecting retention in directretainers. Add a note on gingivally approaching claspsand RPI system ............................................................................. 46

    Define rest and rest seat. Give its location. Describevarious types of rests and their function ..................................... 51

    Explain the various impression techniques used in thefabrication of RPD. Describe the functional impressiontechnique using Korecta wax ....................................................... 59

    What is the importance of distal extension impressionprocedure in partial denture? List factors influencingsupport of distal extension base. Explain in detail fluidwax impression technique ........................................................... 65

    Explain importance of mouth preparation in cast partialdenture designing and add a note on various proceduresand its significance in designing. ................................................ 70

    Enumerate factors affecting design of RPD and add anote on design aspects in Kennedys Class I situations ............. 77

  • Mention and justify the components indicated forKennedys Class I and II RPD. How does it differfrom Class III design .................................................................... 82

    Discuss the problems that are encountered in makingRPD for a Kennedys Class I mandibular situation.Describe the steps in the design of a Kennedys Class Imandibular situation .................................................................... 88

    Define surveyor and surveying. List aims and objectives ofsurveying. Add a note on factors affecting path of insertion ..... 94

    Explain the step by step procedure of surveying mastercast in RPD ................................................................................... 99

    Draw a diagram of Ney surveyor. Label its parts. Listfunction of tools in surveyor. Describe how retentiveundercuts are located using a model surveyor and howthey affect the path of insertion ................................................. 105

    Explain the three basic theories by which forces actingon RPD are distributed between soft tissue and teeth .............. 110

    List various parts of RPD. Explain with diagram and listfunctions of each component in detail ....................................... 115

    What are various forces acting on RPD? Enumeratedifferent methods in which stresses are controlled in RPD ..... 120

    Explain steps in laboratory procedure for frameworkconstruction of cast partial denture .......................................... 126

    Enumerate steps in clinical procedure for fitting theframe work of a cast partial denture ......................................... 134

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