Vichet Chindavanig

3207-755 Syllabus and teaching plan
????????????? ???????????? ????????????????????????????? ???????????????????????????? ????? 2 ??. 2552, 13:00-16:00 Topic: Long-term clinical evaluation of oral
rehabilitation instructors: ???????? ???????, ??????? ????????? a class of 12 students Objectives and sub-topics: The oral rehabilitation represents the integrative concept which re-
establishes every segment of the dental-jaw system that is affected by
edentation in different clinical forms, without eluding the induced
complications and the influence of general status within the chosen therapy
algorithm. ??????????????????????????????????????????????????????????? ???-
???????? ?????????????????
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Despite the significant development of knowledge and techniques, it is
still controversial to which degree the therapy solutions of oral
rehabilitation approach the therapy's ideal ???????????????????????????????????????????????????????
???????????????????????????????????????????????????????????????
???????????????????????????????????????????? Choosing the therapeutically solution can be made only under the
impulse of external factors ???????????????????????????????????????????????????????????????????????
? Whether restorations are crowns, overlays, inlays, veneers or posts
etc., they require good material and correct manipulating technique to the
selected case. ??????????????????? ???????????????????? ???????????????
????????????????? ???????????? ???????????????????????????????
?????????????????????????????????????????????????????? Long-term success and failure may be divided into two categories,
namely biological and physical factors. ??????????????????? ??????????????
??????????????????????????????????????? ??????????????? ??????????????????? Physical factors are marginal integrity, bond strength, microleakage,
retentive form, resistance form, fracture resistance etc. ?????????????????????????? ????????????????? ??????
????????????????????? ????????? ?????????? ????????????? ??????? Biological factors are underlying systemic diseases and oral diseases,
home-care, patient's attitude, psychology etc. ??????????????? ??????????????????????????? ?????????? ? ??????????
?????????????? ????????????????? ???????? ??????? Full mouth rehabilitation with artificial materials, however, one
important above all factors is that the occlusion must meet the
physiological requirement of each specific case. ????????????????????????????????????????
????????????????????????????????????????????????????????????????????????????
??? These following articles may partly answer what, how, why, where and
when your intended restoration will serve patients within satisfactory time
period. ????????????????????????????? ???????????????????????? ???? ???????
?????? ?????????? ???????????????????????? ?
??????????????????????????????????????????????????????? Vichet Chindavanig Introduction: Time 13:00-13:15 Hr Instructors Group 1. Terminology; "attrition, erosion, abrasion, long-term", Results of
prepared tooth surface characteristic (from different dental burs) and
marginal adaptation (must know), product (burs) development, selection Time 13:15-13:40 Hr. 20 min. Group 2. Theories and concepts of cementing; Bond strength, fracture
resistance and microleakage terminology relates to dental adhesive systems
(must know) up-to-date concept, present innovations (nice to know) Time 13:40-14:00 Hr. 20 min. Group 3. Interim restorations, long-term interim, varieties of the
modification technique, material selection (must know), post length and
fracture resistance, clinical techniques (must know), Time 14:00-14:20 Hr. 20 min. Answering questions, making conclusion and coffee break Time 14:20 14:40 20 min. Group 4. Luting materials (zinc phosphate, zinc polycarbocylate,
glassinomer and resin cements) product development (must know), history and
present innovations (nice to know) Time 14:40-15:00 Hr. 20 min. Group 5. Specific brand name materials; their differences (luting
materials, crown structure materials, post materials), (nice to know) Time 15:00-15:20 Hr. 20 min.
Group 6. Laboratory accuracy regarding the technique, common errors, Review
Critical review of some dogmas in prosthodontics Gunnar E. Carlsson (nice
to know) Time 15:20-15:40 min. Answering questions, making conclusion Time 15:40-16:00 Hr. 15 min. Presentation and discussion technique: Instructor will supply number of manuscripts relating to the topic, and a
CD-ROM. After the instructor introduced objectives and their importance,
thereby, 6 groups of students, 2 persons of each group will precede the
assigned topic to the content 15 min., following with discussion and
answering to the questions among students for 3 min. (suggestion; students
should form their own group and should pick a topic by chance). Students
will, therefore, plan and present well-prepared PowerPoint within time
limit on the date and time stated above. Guidelines to the seminar and discussion: the whole session must answer
these questions 1. Define the term "attrition, erosion, abrasion, long-term". What can be
called successful treatment? 2. What are methods and materials of choice for full mouth rehabilitation
case? 3. What are accepted theories and concepts of occlusion apply to the
case? 4. How could dentist improve marginal fit or adaptation of crown margin? 5. What is the nature of physics at tooth-restorative material interface? 6. Role of provisional restorations to the success. 7. Nature of failures 8. Preventive measures 9. Communicating with the dental laboratory, Laboratory techniques 10. Dogmas in prosthodontics (discussion) Text book: Contemporary Fixed Prosthodontics. Rosential SF, land MF,
Fujimoto J. The CV Mosby company Time table Aug 15, 09 Instructor set-up, hand-in manuscripts, CD-ROM etc., classroom
activity plan Sept 25, 09 Students Hand-in PowerPoint to instructor (CD-ROM) at
department office Oct 2, 09 Class actives File name: ?????? ????????? FMR seminar long-term oral rehab, created on
Tue.12th Aug, 2009 Example topics to the conclusion Geometry of the preparation, surface roughness and wettability, different
rotary instruments had no significant influence on the wettability Roughness of axial walls could contribute to precision of a cast
restoration, tungsten carbide finishing burs The lowest discrepancy value (19 ± 17 ?m) was for tooth preparations
refined with finishing burs.
Marginal fit of complete cast crowns is influenced by tooth preparation
surface characteristics Temperature rise in pulp chamber, the critical level is 5.5 degrees C Type of bonding agent or luting cement, To evaluate hybrid layer formation and interfacial seal, surfaces prepared
with carbide bur presented less residual smear plugs (P < 0.05) than
surfaces prepared with diamond burs, carbide burs leave a surface that is
more conducive to bonding than diamond burs analysis revealed no statistically significant differences in microleakage
across bur types, dentin margins leaked significantly more than enamel
margins for all bur types self-etching adhesives, one-step adhesives, bond strength of self-etching
adhesives applied on superficial and deep dentin Ultrastructural characterization of tooth-biomaterial interfaces A 12-year clinical evaluation of a three-step dentin adhesive in noncarious
cervical lesions flowable composite and compomer provided stronger dentine bond strengths
and better margin sealing than the conventional glass ionomer cement adhesives chemically bonded to amalgam such as 10-methacryloyloxydecyl
dihydrogen phosphate bis-GMA resins or 4-META, 4-methacryloxyethyl
trimellitate anhydride (4-META; Atta et al., 1990[pic]) 4-META is a coupling agent which increases adhesion to enamel, composite
resins (Atsuta et al., 1982[pic]), and dental alloys by chemically bonding
to the oxidized surface of non-precious metals (Tanaka et al., 1981[pic]). chemical bonding of the polycarboxylic acid in classical powder/liquid
conventional glass ionomers (GI) and resin-modified glass-ionomers (RMGI)
has been attributed to the excellent long-term bond strengths and clinical
retention. Self-etching adhesive systems are a new generation of materials that
possess acidic methacrylates that can generate self-adhesion. The degree of microleakage was higher on the dentin margins than on the
enamel margins Margin fit parameters and microleakage showed no strong correlations; cast
crowns cemented with resin-modified glass-ionomer and resin-based luting
agent had lower microleakage scores than zinc phosphate cement. Fabrication of an interim prosthesis is an important procedure in oral
rehabilitation because it aids in determining the esthetics, phonetics, and
occlusal relationship of the definitive restoration. The maintenance of
this prosthesis is important during treatment for protection of teeth and
occlusal stability. Considerations and steps: a seri