ROEN0310

I 11 clinical report _ crown preparation I roots3_2010 _Good patient management Working at high magnification with the OM re- quires good patient and procedural management. If the patient moves about or is uncomfortable, the operator cannot concentrate on proper reduction or the task of placing a solid, conservative finish line on the tooth. Therefore, the third most important com- ponent in crown preparation success is the dental rubber dam. For most using a dental dam for a crown prepara- tion is a widely misunderstood concept. Simply put, the rubber dam is the most under-utilised, inexpen- sive and simple piece of equipment an operator can incorporate into his/her crown preparation protocol. Withalittletraining,dentistsandassistantscanlearn techniquesthatwillbenefitallindividualsinvolvedin the restoration of a tooth. (Please note that in all of the photographs, a dental dam is in place before and after.) Tissue management is the fourth concern and it points back to the number one concern of early diag- nosis versus waiting until a tooth is severely decayed or broken down. Working deep subgingivally and in irritatedtissuesexponentiallycomplicatesthetaskof crownpreparation.Haemorrhagicareas,orthosethat aredeepsubgingivally,canbedifficulttovisualiseand control. Early diagnosis can minimise these tissue complications. Good tissue management protocol is paramount to the success of the final restoration. _Radiosurgery: A useful instrument Lasers have been used in dentistry for quite some timebuttheircostandotherfundamentallimitations make them difficult to acquire and use. However, radiosurgery has been in use for years and is an af- fordable and useful instrument that can solve many problems regarding finish-line visualisation, finish- Fig. 5a Fig. 5b Fig. 4a Fig. 4b Fig. 3a Fig. 3b

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