Presentation on theme: "PREVENTIVE ORTHODONTICS"— Presentation transcript:
1 PREVENTIVE ORTHODONTICS Dr Debaleena ChowdhuryDept. of OrthodonticsKGF Dental College
2 PREVENTIVE 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 .
3 Preventive measuresParent counsellingCaries controlSpace maintanenceManagement of abnormal frenal attachments
4 Preventive measures (contd.) Treatment of locked permanent first molarsAbnormal oral musculature & management of related habitsExtraction of supernumerary teeth
5 Parental 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
6 Caries controlCaries of decidious teeth can cause malocclusiona. Nursing bottle cariesb. Rampant caries
11 Space 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
18 INTERCEPTIVE ORTHODONTICS Dept. of OrthodonticsYenepoya Dental College
19 INTERCEPTIVE 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
20 Interceptive 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
21 Serial 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
22 Rationale 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
23 Serial 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
24 Serial extraction indications (contd.) where growth is not enough to overcome the discrepancyPatients with pleasing and straight profile
25 Serial extraction - Contraindications Class II & III malocclusions with skeletal abnormalitiesspaced dentitionOligodontiaOpen bite & deep biteMidline diastemaMild discrepancy between arch length and tooth material
26 Methods of serial extraction Dewel’s methodTweed’s methodNance method
30 DEVELOPING 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.
31 ANTERIOR CROSS BITE Reasons for early treatment: crossbite in deciduous dentition may progress to permanent dentition.simple problem may progress towards more complex skeletal problems.
32 CLASSIFICATION 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.
33 INTERCEPTION OF HABITS Thumb suckingRx bitter solventsthumb cappalatal cribTongue thrustRx palatal cribtongue exercises
34 Mouth breathingRx oral screen surgical removal of nasalobstructions
35 SPACE REGAININGSpace gained by distalization of first molar which have been moved mesially due to early loss of deciduous molars.
40 MUSCLE 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