Biomechanical considerations are required in their design in order to produce RPD that pleases patient and is stable when in the mouth. During the development stages of the RPD every component should be designed to control the possible movements which can be vertical displacements, rotations toward, away or horizontally across the underlying tissue (Carr et al., 2005). In order to reduce these problems static analysis should be carried out. Static analysis of the models is carried in order to determine the best location of the rests and clasps to reduce the axis of rotation to produce a partial denture which is fully functional without the tipping effect. Static analysis is essential in dentistry while constructing partial dentures.
They are placed over the tooth in order to restore the size and shape of the tooth and also to improve its appearance.] Main objective of dental crowns is to protect a weak tooth from ... ... middle of paper ... ...lap technique Two-flap technique Schweckendiek technique and Von Langenbeck technique etc. Congenital craniofacial deformities [Craniofacial deformities are very common disorders. The surgery for craniofacial defects is a broad spectrum of reconstructive procedures of the face and cranium. Craniofacial surgery is a sub-speciality of oral and maxillofacial surgery and plastic surgery] In the early times, these kinds of abnormalities are considered to be untreatable.
4) Due to the differences in techniques, crown down has several advantages over step back, the most important ones being • The ability to open orifices for proper access to coronal one third • Better access • Easier irrigation • More ease in measuring the working length • Minimizing pushing debris and bacteria apically • Decrease in canal blockages in the apical areas. REFERENCES: 1) Harty’s Endodontics in clinical practice 2) Mechanical preparation of root canals, HU LSMANN, OVE A. PETERS & PAUL M.H. DUMMER 3) http://www.maillefer.com/
1. Preparation of tooth: A technique called Rotary Cutterage can produce a chamfer finishing line with limited epithelial tissue removal. The advantage of using it is that it produces little trauma to surrounding tissue. But it can only be used with patient with free of inflammation and healthy gingiva and by experienced dentists. A Rotary Cutterage is the combination of creating an axial reduction with a shoulder finishing line along the gingival crest and afterwards, the finishing line is extended apically with a one-half depth of sulcus so that a chamfer finishing line is created.
Intraoperative factors The apical extent of the root filling and the quality of the root filling were investigated Apical extent of root filling Stoll, Betke et al. (2005) In a retrospective study estimated that the survival according their apical extent. Flush fillings had a 94% survival estimation while short and long fillings estimated results were 80.9% and 74.0% respectively in 5 to 10 years. (Caplan and Weintraub 1997) in a case control study found similar results but it was insignificant. They also found that teeth which had long fillings were extracted rather than retained in contrast to short filling which were retained more often than extracted.
Crest Pro-Health containing Stannous Fluoride has been altered so that it will not cause staining of the teeth. They will argue that stannous fluoride is that better choice. Colgate Total containing Triclosan to help keep the oral cavity clear of plaque for longer. Colgate will argue that Triclosan is the best choice. Who do we trust?
Dental restorations are a form of treatment needed by patients. A restoration is a way dentist can repair a tooth due to decay or fracture. A very common form of restoration is a dental amalgam filling. The restoration can be performed on the surfaces of a tooth as long as it is a class one, class two, class three, and a four and five restoration. Due to their aesthetic appearance the restorations are not recommended and are limited to certain areas in the mouth.
After surgery, to ensure that the teeth fit correctly, a careful coordination between the surgeon and the orthodontist is essential. People who suffer from an improper bite, caused by misaligned jaws and/or teeth, are the best candidates for corrective jaw surgery. Jaw misalignment may occur either congenitally or from an injury. Although, bite correction and “occlusion” problems involving teeth misalignment can be corrected with orthodontics, but corrective jaw surgery becomes necessary if the jaws are misaligned. Corrective jaw surgery helps to properly reposition all or parts of the lower or upper jaw and chin.
• This treatment is ideal for closing small gaps or reshaping teeth, as well as lightening discolored teeth. • No needles or anesthesia is needed as the procedure is considered minimally invasive. • It can only take a single appointment. • The results can last for a long time. Accelerated Orthodontics This treatment entails using various kinds of braces, in conjunction with minor oral surgery.
ADVANTAGE: Effective method for removing plaque. Provides good gingival stimulation. DISADVANTAGE: cause injury to the gingival margin. Time consuming. Stillman’s Brushing Technique: Similar to Bass technique with a slight modification to remove debris more effectively from the embrasures.