Which bur is used for Class 2 cavity preparation?
Which bur is used for Class 2 cavity preparation?
Which bur is used for Class 2 cavity preparation?
All-Ceramic Crown Prep – Bur Set (6 burs)
How do you prepare composite teeth?
The steps of placing dental bonding (composite restorations):
- Preparing (trimming) the tooth (when needed).
- Acid etching the enamel (and dentin)
- Applying the bonding agent.
- Placing the dental composite.
- Curing the restoration.
- Final shaping and polishing.
- Aftercare. / Precautions.
What is class2 filling?
A Class II restoration has to recreate not only the natural contour of the tooth, but also the corresponding proximal contact. Many dentists consider this point, in particular, to be the most demanding part of the treatment.
How many line angles does a Class 2 cavity have?
For class II cavity preparation (mesioocclusal or disto-occlusal) 11 line angles and 6 point angles are as follows. The following is the nomenclature for mesio-occlusal cavity (Fig.
What are the principles of cavity preparation?
The main principles of cavity preparation are to preserve the underlying tooth structure, protect the pulp tissue, save as much as Enamel or Dentin as possible, shape the cavity to achieve maximum resistance and Retention as possible depending on the type of restoration used to help in bearing the mastication forces.
What is proximal box?
A recently described technique, proximal box elevation (PBE), offers the possibility of a stepwise relocation of deep proximal margins to uplift cavity outlines for direct or indirect restorations. 5,6. Step one (PBE) involves a meticulous layering technique for margin relocation above the CEJ.
What instruments are used for composite filling?
Instruments and materials required
- 2 ml syringe with local anaesthetic, long injection cannula for regional block anaesthesia, short injection cannula for infiltration anaesthesia.
- colour-coded ring fitting with the composite material used.
- hand mirror.
- rubber dam.
- hole template.
- rubber dam punch.
- rubber dam clamp.
What is a Class 2 cavity?
Class II cavities Class II carious lesions occur on proximal surfaces of premolars and molars. They may occur in combination with occlusal (Class I) caries or they may occur alone. In situations where the presence of caries is on the occlusal as well as the proximal surface, a two-surface cavity is prepared.
How is a composite filling done?
A composite filling is placed in your tooth in layers. The layers will be gradually built up, so they fill the hole. The dentist may use ultraviolet light to cure the filling in place. This hardens each layer quickly so that the next layer can be placed in the tooth.
What is a Class 2 restoration?
Traditionally, Class II restorations were done with dental amalgam. Over the last 15 years, amalgam use has (obviously) sharply declined while composite use has risen higher and higher. Amalgam offered lots of advantages in Class II situations.
What is Class II cavity preparation?
Operative Dentistry: Class II Cavity Preparation Introduction A Class II carious lesion develops apical to the contact area on the proximal surfaces of posterior teeth. The procedure for the removal of the carious lesion is the same as that of a class I. The first step is the development of the ideal cavity preparation.
What are the clinical preparation techniques for Class 1 composite restoration?
CLASS I COMPOSITE PREPARATION Clinical Techniques for Direct Class I Composite Restoration • Isolation of the operative field • Shade selection 15. CLASS I COMPOSITE PREPARATION Clinical Techniques for Direct Class I Composite Restoration Selecting a cutting instrument: – Carbide burs: 330 pear shaped bur – Diamond burs
How to do an ideal cavity preparation?
By doing an ideal cavity preparation, the extent of the carious lesion on the pulpal, lateral, and axial walls is seen. If there is any remaining carious lesion, it is removed. Any remaining carious lesion is removed only after establishment of the ideal internal and external outline forms. Step 1. Mark centric stops
What are the characteristics of cavity Class I?
• Cavity class I: -five bonded surface (mesial, distal, facial, lingual, pulpal) -occlusal surface is unbonded (free) • Ratio between the number of bonded and unbonded surfaces is 5. • Flow (stress relief is limited) can occure only from the single free surface. C-factor