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Dental Technician Studies. Report about all the information required to progress a single fixed restoration

Extracts from this document...

Introduction

´╗┐Summary This report is about all the information required to progress a single fixed restoration starting from when received from the clinic including information about legal requirements , ethical demands ,risk assessment ,cross infection and operating procedures to follow and quality assurance procedures . Research information about different die manufacturing systems and different types of articulation. Self reflection and critical analysis of these products being manufactured. Accepting cases from the clinic requiring fixed metallic restoration. Reasons why single fixed metallic restorations may be requested. Crown A crown would be fitted because a patient tooth has been suffering from decay and a possible fracture therefore a strong restoration material such as a metal will give the margins an adequate fit and seal on a cap and create a good stabile continuing structure avoiding future fractures or decay. Porcelain crown is aesthetically pleasing to the eye and is a very good biomaterial. Inlay/ onlay A gold inlay would be suggested for a patient where the structure of the tooth is not a able to remain solid and do its primarily function to chew food therefore the structure still there can be used and a inlay can fit to the confines of the cusps on the tooth. Preserving any amounts of tooth will give a good overall strength to the tooth preventing further damage to the tooth. ...read more.

Middle

Rinse impression. use debubblizer if silicone impression. use die stone and mix according to packet instructions for the required amount needed. place mix in vacuum pot and vacuum for approx 1minute. Gently poor insuring all area don?t have air pocket using the vibrating machine and margins are correctly covered. pour from molar teeth round to molar teeth. pour die stone into the tray. turn cast impression over once in a semi set stage and align impression correctly over tray and trim back any excess mix. Allow cast to set then remove impression and check the cast is a correct replica and the margins are in form to allow a restoration to be made. check for any voids , and visible defects . carefully remove from tray by tapping the center and sides. Saw the model where the segment needed is. Use a tooth brush and clean tray and cast model taking any cast dust from sawing away to allow model to fit neatly in tray. poor opposing models in kaffe D and base and trim. tray sytem Rinse impression Disinfect impression use debubbizler if silicone impression use Die stone and mix according to packet instructions for the required amount needed place mix in vacuum pot and vacuum for approx 1minute Gently poor insuring all area don?t have air pocket using the vibrating machine. ...read more.

Conclusion

I made two different types of cast model one using the tray system and one using the pindex system. I struggles a lot with the tray system the fault s I found were after pouring the die stone and allowing to set the cast impression was very hard to take out of the tray after repeatedly taping for long time it eventually did come out of the tray and I did apply some separation spray to the tray beforehand , When I had to saw the model into segments I found that after I had sawed the model did not fit correctly into the tray even after cleaning the tray and model free from dust collected from sawing. I had to use the hand tool and grind away some of the jagged edges left after sawing to enable the model to fit back into the tray which then left a little bit of instability with the model having more movement than it should have. It is possible that I had lots of fault with this due to my inability in sawing straight. I didn?t have any problem with the pindex system I found it a very easy process to follow and my model looked very presentable and was in very good working order. The segments that were sawed fitted back into the model accurately and didn?t need any other kind of trimming or cleaning to make it fit on and off the model easily. ...read more.

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