Disturbances in the Timing of Disturbances in the Timing of Tooth Eruption in Children Tooth Eruption in Children with General Diseases with General Diseases Sven Kreiborg, DDS, DrOdont, PhD Sven Kreiborg, DDS, DrOdont, PhD Pediatric Dentistry and Clinical Genetics Pediatric Dentistry and Clinical Genetics School of Dentistry, Faculty of Health School of Dentistry, Faculty of Health Sciences Sciences University of Copenhagen, Copenhagen, Denmark University of Copenhagen, Copenhagen, Denmark E-mail: [email protected]E-mail: [email protected]
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Disturbances in the Timing of Tooth Eruption in Children with General Diseases Sven Kreiborg, DDS, DrOdont, PhD Pediatric Dentistry and Clinical Genetics.
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Disturbances in the Timing of Disturbances in the Timing of Tooth Eruption in Children with Tooth Eruption in Children with
General DiseasesGeneral Diseases
Sven Kreiborg, DDS, DrOdont, PhDSven Kreiborg, DDS, DrOdont, PhDPediatric Dentistry and Clinical GeneticsPediatric Dentistry and Clinical Genetics
School of Dentistry, Faculty of Health SciencesSchool of Dentistry, Faculty of Health SciencesUniversity of Copenhagen, Copenhagen, DenmarkUniversity of Copenhagen, Copenhagen, Denmark
Disturbances in the Timing of Disturbances in the Timing of Tooth EruptionTooth Eruption
Natal/neonatal teethNatal/neonatal teeth
Premature eruptionPremature eruption
Delayed eruptionDelayed eruption
Normal Tooth EruptionNormal Tooth EruptionTimingTiming
In the primary dentition: In the primary dentition: no no significant difference between significant difference between boys and girlsboys and girls
In the permanent dentition: In the permanent dentition: girls girls have significantly earlier tooth have significantly earlier tooth eruption than boys eruption than boys (about 6 (about 6 months)months)
Normal Tooth EruptionNormal Tooth EruptionTimingTiming
There is a There is a weakweak correlation correlation between between tooth eruptiontooth eruption and and chronological agechronological age
There is a There is a weakweak correlation correlation between between tooth eruptiontooth eruption and and skeletal ageskeletal age
Normal Tooth EruptionNormal Tooth EruptionTimingTiming
There is a There is a strongstrong correlation correlation between between tooth eruptiontooth eruption and and dental dental ageage
Demijian et al. Demijian et al.
A new system of dental age assessmentA new system of dental age assessmentHum Biol 1973;45:211-27Hum Biol 1973;45:211-27
Disturbances of Tooth EruptionDisturbances of Tooth EruptionPOSSUM-DatabasePOSSUM-Database
Delayed eruption in syndromes with:Delayed eruption in syndromes with: General growth disturbancesGeneral growth disturbances Maxillary and mandibular hypoplasiaMaxillary and mandibular hypoplasia Disturbances of tooth formationDisturbances of tooth formation Gingival fibromatosisGingival fibromatosis Disturbances of bone metabolismDisturbances of bone metabolism
Delayed Tooth EruptionDelayed Tooth Eruption
There is a There is a strongstrong correlation correlation between between tooth eruptiontooth eruption and and abnormal tooth developmentabnormal tooth development
TOOTH ERUPTION – DELAYEDTOOTH ERUPTION – DELAYEDSyndromes with Dental AnomaliesSyndromes with Dental Anomalies
Causes of delayed tooth eruptionCauses of delayed tooth eruption::abnormalities of tooth development and crowdingabnormalities of tooth development and crowding
Premature craniosynostosisPremature craniosynostosis Maxillary hypoplasiaMaxillary hypoplasia Shallow orbitsShallow orbits Small noseSmall nose Syndactyly of hands and feetSyndactyly of hands and feet
Causes of delayed tooth eruptionCauses of delayed tooth eruption::maxillary hypoplasia with severe crowding and maxillary hypoplasia with severe crowding and gingival hyperplasiagingival hyperplasia
Short statureShort stature Increased bone density (osteopetrosis)Increased bone density (osteopetrosis) Delayed closure of fontanelles and suturesDelayed closure of fontanelles and sutures Hypoplastic midfaceHypoplastic midface Mandibular retrognathia Mandibular retrognathia Aplasia of teethAplasia of teethCauses of delayed tooth eruptionCauses of delayed tooth eruption::hypoplastic jaws with crowding and abnormal hypoplastic jaws with crowding and abnormal bone metabolism bone metabolism
TOOTH ERUPTION – DELAYEDTOOTH ERUPTION – DELAYEDSyndromes with Bone DisordersSyndromes with Bone Disorders
OsteopetrosisOsteopetrosis PycnodysostosisPycnodysostosis McCune Albright syndromeMcCune Albright syndrome Tricho-dento-osseous syndromeTricho-dento-osseous syndrome Osteopathia striata with cranial Osteopathia striata with cranial
Curly/frizzy hairCurly/frizzy hair Increased bone densityIncreased bone density Aplasia of teethAplasia of teeth Amelogenesis imperfectaAmelogenesis imperfecta TaurodontismTaurodontism
Causes of delayed tooth eruptionCauses of delayed tooth eruption::abnormal bone metabolism and abnormalities abnormal bone metabolism and abnormalities of tooth developmentof tooth development
Osteopathia Striata with Cranial SclerosisOsteopathia Striata with Cranial SclerosisDelayed Tooth EruptionDelayed Tooth Eruption
Increased bone densityIncreased bone density Hearing lossHearing loss Linear striations in long bonesLinear striations in long bones Aplasia of teethAplasia of teeth TaurodontismTaurodontism
Cause of delayed tooth eruptionCause of delayed tooth eruption::abnormal bone metabolismabnormal bone metabolism
TOOTH ERUPTION – DELAYEDTOOTH ERUPTION – DELAYEDSyndromes with ObstaclesSyndromes with Obstacles
Large head with prominent frontal bonesLarge head with prominent frontal bones Wide sutures and fontanellesWide sutures and fontanelles Small faceSmall face Aplasia/hypoplasia of claviclesAplasia/hypoplasia of clavicles Supernumerary teethSupernumerary teeth
Causes of delayed tooth eruptionCauses of delayed tooth eruption::supernumerary teeth and abnormal bone metabolismsupernumerary teeth and abnormal bone metabolism
• Extraction of primary tooth/teethExtraction of primary tooth/teeth• Removal of obstaclesRemoval of obstacles• DenudationDenudation• Removal of alveolar bone occlusallyRemoval of alveolar bone occlusally• Orthodontic tractionOrthodontic traction• Bone distractionBone distraction• AutotransplantationAutotransplantation
TOOTH ERUPTIONTOOTH ERUPTION Delay in Intra-Osseous or Delay in Intra-Osseous or