What is a slot retention?
Slot-Retained Amalgam Restorations. For a complex restoration, a slot is a horizontal retention groove in dentin (Fig. 16-5). Slot retention can be used in conjunction with pin retention or as an alternative to it.
How do you make a class 2 cavity?
Envision the cavity preparation outline and extent:
- Always keep the bur perpendicular to the long axis of the tooth.
- Follow the anatomical grooves of the tooth
- Leave a small “enamel shell” interproximally to protect the adjacent tooth from iatrogenic damage.
What is a proximal box?
The proximal part of the cavity that is formed in this process is referred to as the proximal box. It has a floor (gingival) and walls (buccal, lingual and axial). The floor is ideally slightly larger than the occlusal opening, to provide retention against vertical displacement (undercut effect).
Why is cusp capping done?
Cusps typically need to be capped or replaced as a result of decay and cavities or as a result of dental trauma, such as tooth fracture. Cusp capping can also be used to strengthen severely damaged teeth, teeth with poor pulpal health and can even act as a foundation for the fitting of crowns.
What is preventive resin restoration?
A Preventive Resin Restoration (PRR) is a thin, resin coating applied to the chewing surface of molars, premolars and any deep grooves (called pits and fissures) of teeth. More than 75% of dental decay begins in these deep grooves. Teeth with these conditions are hard to clean and are very susceptible to decay.
What is a tunnel restoration?
Tunnel restoration can be an option to restore proximal caries if the dentist performs proper case selection and pays attention to the details of the restorative procedures. This paper describes the clinical technique of tunnel restoration and reviews the studies of tunnel restorations.
What is a class V filling?
These are commonly known as Class V cavities using the classification devised by G. V. Black. Amalgam, composite resin (in different formulations), glass ionomer, resin modified glass ionomer (RMGI) and compomer may all be considered appropriate restorative materials for class V restorations.
What is a Class 3 cavity?
A cavity that occurs between front teeth is referred to as a class 3. Food collects between teeth. Sugars within food are converted to acids that decalcify enamel. Continued destruction forms a hole and therefore, the term cavity.
What material do we use to fill teeth?
Teeth can be filled with gold; porcelain; silver amalgam (which consists of mercury mixed with silver, tin, zinc, and copper); or tooth-colored, plastic, and materials called composite resin fillings. There is also a material that contains glass particles and is known as glass ionomer.
Can a liner be used as a base?
Varnish, calcium hydroxide, zinc phosphate, glass ionomer, and resin can be used as a liner. Bases are applied in thick layers to provide the pulp with thermal protection….Liners, Bases, and Cements: Material Selection and Clinical Applications.
| Line | Base | Cement* |
|---|---|---|
| varnish | zinc oxide eugenol | calcium hydroxide |
| calcium hydroxide | zinc phosphate | zinc oxide eugenol |
What is tooth preparation?
Introduction. Tooth preparation, which is a basic aspect of the treatment of hard-tissue dental diseases, is the process used for the quantitative preparation and formation of hard tissues on a patient’s diseased teeth. At present, tooth preparation is generally performed with a high-speed dental handpiece.
What is conservative tooth preparation?
Conservative dentistry, a treatment process whereby a minimum of healthy tooth structure is removed during the restorative process, is inherently a desirable dental objective.
What is conventional tooth preparation?
DEFINITION OF TOOTH PREPARATION Tooth preparation is the mechanical alteration of a defective ,injured or diseased tooth to receive a restorative material that re-establishes a healthy state for the tooth, including esthetic corrections where indicated and normal form and function.
Is preventive resin restoration necessary?
PRRs can protect teeth from decay for many years, but need to be checked for wear and chipping at regular dental visits. Reasons for Preventive Resin Restoration: Children and teenagers – As soon as the six-year molars (the first permanent back teeth) appear or any time throughout the cavity prone years of 6-16.
How long does preventive resin restoration last?
The research literature indicates the “sealants” need touching up at a rate of about 60% each year. After 12 years placing these restorations, we consider the PRRs to be the single best service we can provide you that will carry long term preventive benefits for your child’s teeth.
What is sandwich technique in dentistry?
The sandwich technique is a specific strategy in restorative dentistry used for fillings. In both open and closed sandwich techniques, the different materials of the composite resin is layered or “stacked” onto the tooth, similar to building the layers of a sandwich.