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MDA Chapter 60 Orthodontics
Modern Dental Assisting 9th Edition
Terms in this set (52)
What is Orthodontics?
Specialty that studies and supervises the growth and development of the dentition and related anatomic structures
What is the Psychological treatment?
Mal-oppossed teeth present an unattractive smile, causing a psychological effect on social behavior
What is the Physical treatment?
Hereditary or chronic physical conditions such as large teeth, recessed chin
What is the Habits of treatment?
Tongue thrusting, thumb sucking and bruxism
What does tongue thrusting do to the teeth?
Pressure causing protrusion
What does thumb sucking do to the teeth?
Flaring of anterior teeth (open bites)
What does Bruxism do to the teeth?
Excursion of the mandible (side to side)
What is Preventative?
Eliminate irregularities in the developing of the dentition and facial structure
What is caries regarding to treatment?
Prevent premature loss of primary teeth. Use of space maintainers
What is Correction of bad habits regarding to treatment?
What is Primary teeth regarding to treatment?
Need supervision of exfoliation so that permanent teeth will not erupt out of alignment or become anklosed
What is Interceptive?
To take steps and correct problems while they are developing,
What can you do to interceptive?
Removal of primary causes mal-alignment of permanent teeth, serial extraction to correct overcrowding of the first premolar in each quad
What is tooth movement?
As you push a tooth in any direction, bone is resorbed (lost) in that direction, new bone is then deposited where that tooth used to be
What is Resorption?
Direction in which force is applied to compress the ligament and reduce vascularity
What is Deposition?
Side away from the tension causes osteobasts to activate and deposition of new bone begins
What is Anchorage?
Resistance of teeth and supporting structures to mechanical displacement
What is Reciprocal Force?
Depends on stability of dental units; Anchorage using their strength; Working against other units in the arch
What is Osteoblasts?
Cells that are responsible for new bone
What are the sides for Class I of Occlusion?
Occlusion, Neutrocclusion and Centric Occlusion
What is Class I of the Occlusion?
Molars are in normal relationship, anterior teeth may be crowded or rotated. Mesial buccal cusp of the upper first molar occludes with buccal groove of lower first molar
What are the sides for Class II for Occlusion?
What is Class II of the Occlusion?
Mesial buccal cusp of maxillary first molar is mesial to the buccal groove of the mandibular first molar
What is Class II division I of the Occlusion?
The maxillary incisors are in labioversion (bucked) (teeth are flared)
What is Class II division II of the Occlusion?
Maxillary central incisors are normal and the lateral incisors may be tipped labially and mesially ( 1st molar sits towards the back/distal of 1st molar
What are the sides for Class III for Occlusion?
What is Class III for Occlusion?
Mesial buccal cusp of the maxillary first molar is distal to the buccal groove of the mandibular first molar. Protrusive lower jaw
What is a Cross bite?
One or more teeth or cusps close inside lower teeth or cusps during occlusion, condition of the anterior or posterior teeth being lingual to the other
What is Overbite/Closed Bite?
Condition where upper teeth overlap lowers. severe cases the lower incisors bite into the palate
What is an Open Bite?
Upper and lower anterior teeth do not occlude leaving an open space when jaws are closed. can be caused by thumb sucking and mouth breather
What is an Over Jet?
Condition of greater than normal horizontal overlapping of anterior teeth
What is Intermaxillary Elastics?
Small rubber bands which are used to exert pressure to assist in adjustment of the jaws and teeth. also used to help correct crossbite and other occlusion problems
What is Class II of Elastics?
Extend form the maxillary anteriors to the mandibular posterior. ( Helps to correct class 2 pull from back forward)
What is Class III of Elastics?
Extend from the mandibular anterior to the maxillary posteriors (pull from back to forward)
What is a Bracket?
Attachment that are either welded to the bands or bonded directly to the teeth. To hold the arch wire in place and to transmit the force of the arch wire to move the tooth
What are Bands?
Thin bands of metal that are carefully fitted around each tooth, cement in commonly used, because they provide the means to hold and control tooth movement
What are Arch Wires?
Guide or track along which the teeth are to be moved, changed throughout the treatment, bring us closer to the idea tooth position
What Rubber Bands?
Provide force which helps teeth move usually employing one arch or group of teeth against the other
What is head gear?
Uses an elastic force, outside the mouth itself, that helps to bring the upper teeth back
What is Pedodontics?
Specializes in the treatment of children usually childhood through eighteen yrs of age
What is a Pedodontist?
Specializes in and has limited his practice and skills to children and teens,
At what age is the bite relationship/ full primary dentition established?
2 1/2 to 3 years
What is Andontia?
Missing teeth occurring from heredity
At what age does the deciduous teeth are shed?
12-13 years of age
At what age should you bring your child to have their first examination?
3 years old
What is Pulpotomy?
Procedure in ehich the pulp chamber of a tooth and the pulp is partially removed
What is Pulppectomy?
Involves the complete removal of the pulp from the camber and canals
What do DR do at the first exam for children?
Consist of oral exam, x-rays, prophylaxis and fluoride, thumb sucking, mouth-breathing and tongue thrusting
What are the common reactions of the dental office?
Temper tantrum, vomiting, hold breath until they turn blue and crying
What is the different between primary and permenent teeth?
Primary teeth have a larger pulp chamber and enamel is thinner and contain less dentin so they appear lighter than adult teeth
Why are primary teeth permissible for decay?
The pulp is do large on primary teeth tht the decay enters into it quite easily
What are Space Maintainers?
Appliance designed to maintain alignment of the arch and conserve space for the proper eruption of the permanent teeth
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