September 20th, 2009 by admin
A) Non surgical methods.
B) pre-prosthetic surgical preparation.
A) Non surgical methods
Including the management of abused soft tissues
Causes of abused soft tissues
1- denture base hypersensitivity.
2- Chronic poor oral hygiene.
3- Continuous denture wearing. Read the rest of this entry »
September 20th, 2009 by admin
INTRODUCTION
The oral mucosa (denture bearing mucosa) is not created to be covered or to carry prosthesis. Deviation from nature always results in changes in the tissues, which may be pathological.
Before the construction of new prosthesis, the supporting structures must be in a healthy condition.
A thorough examination of the mouth prior to construction of complete dentures is necessary to identify potential problem areas. Potential problem areas can be made with the aid of mounted diagnostic casts, intraoral radiographs and panoramic radiography. Read the rest of this entry »
September 19th, 2009 by admin
DENTURE TEETH are
commercially available prosthetic teeth There are several manufacturers of denture teeth. Denture teeth are made of
plastic and porcelain The most frequently used prosthetic
teeth on a RPD are denture teeth attached to
the framework with a processed plastic base When a processed plastic
base will be used to attach the
prosthetic teeth to the
framework. Read the rest of this entry »
September 19th, 2009 by admin
DEFINITION
PROSTHETIC TEETH are the
artificial substitutes for the missing natural
teeth.
FUNCTIONS
The functions of prosthetic teeth are
to:
1. Restore the esthetic, phonetic
and masticatory functions of
the missing natural teeth.
2. Transmit forces to the
denture base through which
they may be distributed by
the prosthesis to all teeth and Read the rest of this entry »
September 19th, 2009 by admin
All definitive RPDs will have the
following components: (1) a major
connector, (2) several minor connectors, (3)
two or more direct retainers, (4) one or more
denture bases, and (5) one or more
prosthetic teeth (Fig. 3-1). Each component
or part one or more functions necessary for Read the rest of this entry »
September 19th, 2009 by admin
Definitive RPDs are
constructed after extensive diagnosis,
treatment planning, and thorough
preparation of the teeth and tissues for the
prosthesis. The length of service of
definitive RPDs is intended to be many Read the rest of this entry »
September 11th, 2009 by admin
The accepted design is based on that suggested by Turner (1977).
The mouthguard is normally fitted to the maxillary arch except in
Class III malocclusion. It should be close-fitting and should cover
the occlusal surfaces of the teeth, except where it is anticipated
that the exfoliation of primary teeth or further eruption of teeth
will occur. It should extend at least as far back as the distal surface Read the rest of this entry »
September 11th, 2009 by admin
Overjets
predispose to dental trauma
• can be reduced in the early mixed dentition
• reduction in uncrowded arches is with functional appliances or extra
oral traction
• reduction in crowded arches involves extractions in both dentitions
Provision of mouth protection in sports
Dental injuries associated with sports in British children under
15 years of age account for only 14 per cent of all injuries. The
incidence in Sweden in the same age group is 25 per cent due to
the popularity of ice hockey. In the majority of cases it is the front Read the rest of this entry »
August 25th, 2009 by admin
Special indications:
-Tooth fractures in teenagers.
-Single and strongly discolored nonvital teeth.
-Large labial erosions and front teeth with extensive cervical
restorations.
-Strong discolorations that cannot be removed by bleaching
or through micro abrasion.
-Extensive enamel defects.
-Occlusal and incisal overlays in the anterior and posterior
regions caused by acid erosion (bulimia, anorexia nervosa).
-Deep bite with or without contact.
-On lower front teeth instead of crowns.
-Closing a diastema.
-Correcting minor malaligaments.
Contraindications:
-Extreme bruxism
-Front teeth with too extensive composite restorations and
with too large destructions
-High caries activity, lack of dental awareness
-Poor oral hygiene
August 25th, 2009 by admin
Irreversibility
Tooth substance must be removed. The restorations can not
be tried-in and be cemented temporarily. If the veneer is put
in and attached, it is not possible to correct it later. However,
a veneer can be removed (this is only possible through
grinding) and replace it with a new veneer or crown.
Placing a veneer is a very demanding dental activity. For the
ceramist in the laboratory, it is also a big challenge again
and again to accommodate color, form, surface structure
and individual characteristics on small areas. All this leads
to relatively high costs.
