DIMENSIONAL ACCURACY OF PUTTY-WASH ONE-STEP AND TWO-STEP IMPRESSION TECHNIQUE IN FABRICATION OF FIXED PARTIAL DENTURE
Journal Title: Journal of Evolution of Medical and Dental Sciences - Year 2019, Vol 8, Issue 13
Abstract
BACKGROUND Impression is crucial step in fabrication of fixed partial denture (FPD). The most common impression technique used in fabrication of fixed partial denture (FPD) is putty-wash impression technique, divided into two, which are one step and two step. Dimensional accuracy of one step and two step putty-wash impression technique is still a controversial. The purpose of this study is to find out the impression results difference of dimensional accuracy, inter abutment distance, abutment height, and mesiodistal width among conventional one step technique, modified one step technique with ethyl vinyl acetate spacer, non-spacer two step technique and two step technique with polyethylene spacer. METHODS The design of this study is laboratory experimental. Samples of this study are dye model from master model imprinted with polyvinyl siloxane putty and wash poured with type IV gypsum. The size of the master model is 28,25 mm for inter abutment distance, 8 mm for abutment height and 6,25 mm for mesiodistal width. 40 samples are divided into four groups, which are conventional one step technique group, modified one step technique with ethyl vinyl acetate spacer group, non-spacer two step technique group and two step technique with polyethylene spacer group. The samples are fabricated at Unit Jasa Industri (UJI) Dental FKG USU, the samples are scanned at Laboratorium Simon Dental Medan and measured with 3D Builder software. The samples are measured according to ISO No. 4823 in three dimension which are inter-abutment distance, abutment height and abutment mesiodistal width. RESULTS Mean and standard deviation for group A is -0,216±0,127%, group B is 0,177 ± 0,11 %, group C is 0,57 ± 0,213 %, and group D is - 0,375 ± 0,141%. The mean and standard deviation abutment height for group A is 0,575 ± 0,271%, group B is 0,013±0,26%, group C is 0,55±0,179% and group D is -0,85 ± 0,444%. The mean and standard deviation mesiodistal width for group A is -1,54±0,28%, group B is 0,08±0,173%, group C is -1,168 ± 0,534 % and group D is -0,72 ± 0,513 %. CONCLUSIONS Modified one step technique with ethyl vinyl acetate spacer is the most accurate technique in inter-abutment distance, abutment height and mesiodistal width and the accuracy of that technique had significant difference with other techniques.
Authors and Affiliations
Fernando Fernando, Syafrinani Syafrinani, Indra Nasution
Keywords
Related Articles
- EP ID EP555723
- DOI 10.14260/jemds/2019/221
- Views 85
- Downloads 0
A CLINICO-AETIOPATHOLOGICAL STUDY OF PALMOPLANTAR KERATODERMA
BACKGROUND Palmoplantar keratodermas (PPKs) are a diverse entity of disorders that are characterised by abnormal thickening of the skin on the palms and soles. Over 50 types have been described and many of the inheritabl...
FATAL TRAFFIC ACCIDENTS- A REVIEW ON THE CAUSES OF MORTALITY IN IRAN
BACKGROUND Traffic accidents have remarkably had negative impacts on the patient’s life and health systems in Iran and has remained among the most important causes of morality. In this article, we aimed to review the cau...
ANTIBIOTIC SUSCEPTIBILITY PATTERNS IN POST-OPERATIVE INFECTIONS IN ORAL CANCER PATIENTS IN A TERTIARY CARE CENTRE IN SOUTH INDIA
BACKGROUND The use of antibiotic prophylaxis in head and neck oncologic surgery has greatly reduced the risk of post-operative wound infection and the corresponding increase in morbidity and health care costs. Aim: To st...
APPLICATION OF LEAN SIX-SIGMA APPROACH TO REDUCE BIOMEDICAL EQUIPMENTS BREAKDOWN TIME AND ASSOCIATED DEFECTS
BACKGROUND Lean Six Sigma is an advanced methodology of quality management and quality improvement. Lean Six Sigma implementation in equipment maintenance can be a good solution, which can reduce the waste and variation...
EFFICACY OF INTRATHECAL LEVOBUPIVACAINE AND BUPIVACAINE FOR CAESAREAN SECTION- A COMPARATIVE STUDY
BACKGROUND Levobupivacaine is the S (-) isomer of bupivacaine, developed as an alternative to bupivacaine for regional anaesthesia after the evidence of its less cardiotoxicity and neurotoxicity. The present study was un...