Presentation on theme: "PREVENTIVE ORTHODONTICS"— Presentation transcript:
1PREVENTIVE ORTHODONTICS Dr Debaleena ChowdhuryDept. of OrthodonticsKGF Dental College
2PREVENTIVE ORTHODONTICS Definitons“Action taken to preserve the integerity of what appears to be a normal occlusion at a specific time.” - Graber (1966)“Prevention of potential interferences with occlusal development.”- Proffit & Ackerman .
3Preventive measuresParent counsellingCaries controlSpace maintanenceManagement of abnormal frenal attachments
4Preventive measures (contd.) Treatment of locked permanent first molarsAbnormal oral musculature & management of related habitsExtraction of supernumerary teeth
5Parental education A. Prenatal counselling Education of the expecting motherB. Postnatal counsellingAssociated with the clinical examination of the child ata. 6months - 1 year c. 3 yearsb. 2 years d years
6Caries controlCaries of decidious teeth can cause malocclusiona. Nursing bottle cariesb. Rampant caries
11Space maintenance Indicated in early loss of decidious teeth Two types of space maintenanceRemovableFunctional ( teeth incorporated )Non functionalFixed-Band & loop Nance holding arch-Crown & loop Lingual arch-Distal shoe
18INTERCEPTIVE ORTHODONTICS Dept. of OrthodonticsYenepoya Dental College
19INTERCEPTIVE ORTHODONTICS Interceptive orthodontics has been defined as that phase of the science and art of orthodontics employed to recognize and eliminate potential irregularities and malpositions of the developing dentofacial complex
20Interceptive Procedures Serial extractionCorrection of developing cross biteControl of abnormal habitsSpace regainingMuscle exercisesInterception of skeletal malrelationRemoval of soft tissue or bony barrier to enable eruption of teeth
21Serial extractionProcedure that indicates the planned extraction of certain decidious teeth and later specific permanent teeth in an orderly sequence and predetermined pattern to guide the erupting permanent teeth into a more favorable position
22Rationale for serial extraction Arch length tooth -material discrepancyPhysiologic tooth movement : By selective removal of some teeth the rest of the teeth which are in the process of eruption are guided by the natural forces into extraction spaces
23Serial extraction :Indications Class 1 malocclusion showing harmony between skeletal and muscular systemArch length deficiency ; features:Absence of physiologic spacingMalpositioned or impacted lateralsCrowded upper and lower anteriorsAbnormal eruption patternAnkylosis of one or more teeth
24Serial extraction indications (contd.) where growth is not enough to overcome the discrepancyPatients with pleasing and straight profile
25Serial extraction - Contraindications Class II & III malocclusions with skeletal abnormalitiesspaced dentitionOligodontiaOpen bite & deep biteMidline diastemaMild discrepancy between arch length and tooth material
26Methods of serial extraction Dewel’s methodTweed’s methodNance method
30DEVELOPING ANTERIOR CROSSBITE Condition characterised by reverse overjet wherein one or more maxillary anterior teeth are in lingual relation to the mandibular teeth.Early interception is necessary.
31ANTERIOR CROSS BITE Reasons for early treatment: crossbite in deciduous dentition may progress to permanent dentition.simple problem may progress towards more complex skeletal problems.
32CLASSIFICATION OF ANTERIOR CROSSBITE DENTOALVEOLAR Rx – tongue blade, Catalan’s appliance, double cantilever spring with P.B.P.SKELETAL Best treated during growth by growth modification proceduresFUNCTIONAL (pseudo-crossbites) Rx - removal of occlusal interferences.
33INTERCEPTION OF HABITS Thumb suckingRx bitter solventsthumb cappalatal cribTongue thrustRx palatal cribtongue exercises
34Mouth breathingRx oral screen surgical removal of nasalobstructions
35SPACE REGAININGSpace gained by distalization of first molar which have been moved mesially due to early loss of deciduous molars.
40MUSCLE EXERCISES Exercises for masseter muscle clenching of teeth by patient while counting to 10.Exercises for lips (circumoral muscles)Holding and pumping of water back and forth behind the lips.Massaging of the lipsButton pull exercisesTug of war exercises
41Exercises for tongueOne elastic swallowTongue holding exercisesTwo elastic swallowHold-pull exercise
42INTERCEPTION OF SKELETAL MALRELATION Interception of Class II malrelationFace bow with headgearMyofunctional appliancesInterception of Class IIIChincup with headgearFR IIIFacemask therapy
43REMOVAL OF SOFT AND HARD TISSUE BARRIERS Surgical excision of soft tissue and any overlying bone above the crown of unerupted tooth