Molar-Incisor Hypomineralization (MIH). Prevalence among 16-year-old adolescents: A case-control study of children with a low Apgar score at birth and a study on tooth formation and antibiotics in mice
Background/Aims: Molar-Incisor Hypomineralization (MIH) is one of the most common dental developmental disorders with a global prevalence of 13%. The etiology of MIH is still elusive. The aims of this thesis were to report the prevalence of MIH in northern Norway, to investigate a possible associati...
Main Author: | |
---|---|
Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
Published: |
UiT The Arctic University of Norway
2022
|
Subjects: | |
Online Access: | https://hdl.handle.net/10037/24706 |
id |
ftunivtroemsoe:oai:munin.uit.no:10037/24706 |
---|---|
record_format |
openpolar |
spelling |
ftunivtroemsoe:oai:munin.uit.no:10037/24706 2023-05-15T17:43:28+02:00 Molar-Incisor Hypomineralization (MIH). Prevalence among 16-year-old adolescents: A case-control study of children with a low Apgar score at birth and a study on tooth formation and antibiotics in mice Schmalfuss, Andreas Jörn 2022-04-22 https://hdl.handle.net/10037/24706 eng eng UiT The Arctic University of Norway UiT Norges arktiske universitet Paper I: Schmalfuss, A., Stenhagen, K.R., Tveit, A.B., Crossner, C.G. & Espelid, I. (2016). Canines are affected in 16-year-olds with molar-incisor hypomineralisation (MIH): an epidemiological study based on the Tromsø study: “Fit Futures”. European Archives of Paediatric Dentistry, 17 (2), 107-113. Also available at https://doi.org/10.1007/s40368-015-0216-6 . Paper II: Sidaly, R., Schmalfuss, A., Skaare, A.B., Sehic, A., Stiris, T. & Espelid, I. (2016). Five-minute Apgar score ≤ 5 and Molar Incisor Hypomineralisation (MIH) - a case control study. BMC Oral Health, 17 (1), 25. Also available in Munin at https://hdl.handle.net/10037/10692 . Paper III: Schmalfuss, A.J., Sehic, A. & Brusevold, I.J. (2021). Effects of antibiotics on the developing enamel in neonatal mice. European Archives of Paediatric Dentistry, 23 , 159-168. Also available in Munin at https://hdl.handle.net/10037/23290 . https://hdl.handle.net/10037/24706 openAccess Copyright 2022 The Author(s) VDP::Medisinske Fag: 700::Klinisk odontologiske fag: 830::Barnetannpleie og kariesprofylakse: 834 VDP::Medical disciplines: 700::Clinical dentistry disciplines: 830::Pediatric dentistry and dental caries prophylaxis: 834 Tromsøundersøkelsen The Tromsø Study Fit Futures DOKTOR-003 Doctoral thesis Doktorgradsavhandling 2022 ftunivtroemsoe 2022-04-06T22:58:30Z Background/Aims: Molar-Incisor Hypomineralization (MIH) is one of the most common dental developmental disorders with a global prevalence of 13%. The etiology of MIH is still elusive. The aims of this thesis were to report the prevalence of MIH in northern Norway, to investigate a possible association between birth asphyxia and MIH, and to document the effect of antibiotics on the developing enamel in neonatal mice were investigated. Methods: To assess the MIH prevalence, distribution, and severity of affected teeth, a cross-sectional health survey including 16-year-olds was performed. The diagnosis of MIH was based on clinical photographs. To examine the association between Apgar score ≤ 5 five min after birth and MIH, a cross-sectional case-control study of 8- to 10-year-old children was performed. The effects of gentamycin and ampicillin on the developing enamel were assessed in neonatal mice given intravenous injections. X-ray microtomography (micro-CT) was used for enamel analysis. Results: The prevalence of MIH in northern Norway was 13.9%. Affected canines were recorded in 22.8% of the participants with MIH. Only opacities were reported in 54% of the affected molars. There was no correlation between an Apgar score and the prevalence of MIH. The analysis showed significantly lower vol% in molars and incisors in addition to lower MD in the incisors in the study group. Conclusions: The prevalence of MIH (13.9%) as well as the distribution pattern and severity of affection were consistent with previous Scandinavian reports. Approximately one-quarter of all participants affected by MIH had at least one affected canine. An Apgar score ≤ 5 did not increase the incidence of MIH. Intervention with high-dose antibiotics given to neonatal mice influenced the development of molars and incisors. The analysis of teeth in neonatal mice with micro-CT could be a valid model for further research on MIH. Doctoral or Postdoctoral Thesis Northern Norway Tromsø University of Tromsø: Munin Open Research Archive Norway Tromsø |
institution |
Open Polar |
collection |
University of Tromsø: Munin Open Research Archive |
op_collection_id |
ftunivtroemsoe |
language |
English |
topic |
VDP::Medisinske Fag: 700::Klinisk odontologiske fag: 830::Barnetannpleie og kariesprofylakse: 834 VDP::Medical disciplines: 700::Clinical dentistry disciplines: 830::Pediatric dentistry and dental caries prophylaxis: 834 Tromsøundersøkelsen The Tromsø Study Fit Futures DOKTOR-003 |
spellingShingle |
VDP::Medisinske Fag: 700::Klinisk odontologiske fag: 830::Barnetannpleie og kariesprofylakse: 834 VDP::Medical disciplines: 700::Clinical dentistry disciplines: 830::Pediatric dentistry and dental caries prophylaxis: 834 Tromsøundersøkelsen The Tromsø Study Fit Futures DOKTOR-003 Schmalfuss, Andreas Jörn Molar-Incisor Hypomineralization (MIH). Prevalence among 16-year-old adolescents: A case-control study of children with a low Apgar score at birth and a study on tooth formation and antibiotics in mice |
topic_facet |
VDP::Medisinske Fag: 700::Klinisk odontologiske fag: 830::Barnetannpleie og kariesprofylakse: 834 VDP::Medical disciplines: 700::Clinical dentistry disciplines: 830::Pediatric dentistry and dental caries prophylaxis: 834 Tromsøundersøkelsen The Tromsø Study Fit Futures DOKTOR-003 |
description |
Background/Aims: Molar-Incisor Hypomineralization (MIH) is one of the most common dental developmental disorders with a global prevalence of 13%. The etiology of MIH is still elusive. The aims of this thesis were to report the prevalence of MIH in northern Norway, to investigate a possible association between birth asphyxia and MIH, and to document the effect of antibiotics on the developing enamel in neonatal mice were investigated. Methods: To assess the MIH prevalence, distribution, and severity of affected teeth, a cross-sectional health survey including 16-year-olds was performed. The diagnosis of MIH was based on clinical photographs. To examine the association between Apgar score ≤ 5 five min after birth and MIH, a cross-sectional case-control study of 8- to 10-year-old children was performed. The effects of gentamycin and ampicillin on the developing enamel were assessed in neonatal mice given intravenous injections. X-ray microtomography (micro-CT) was used for enamel analysis. Results: The prevalence of MIH in northern Norway was 13.9%. Affected canines were recorded in 22.8% of the participants with MIH. Only opacities were reported in 54% of the affected molars. There was no correlation between an Apgar score and the prevalence of MIH. The analysis showed significantly lower vol% in molars and incisors in addition to lower MD in the incisors in the study group. Conclusions: The prevalence of MIH (13.9%) as well as the distribution pattern and severity of affection were consistent with previous Scandinavian reports. Approximately one-quarter of all participants affected by MIH had at least one affected canine. An Apgar score ≤ 5 did not increase the incidence of MIH. Intervention with high-dose antibiotics given to neonatal mice influenced the development of molars and incisors. The analysis of teeth in neonatal mice with micro-CT could be a valid model for further research on MIH. |
format |
Doctoral or Postdoctoral Thesis |
author |
Schmalfuss, Andreas Jörn |
author_facet |
Schmalfuss, Andreas Jörn |
author_sort |
Schmalfuss, Andreas Jörn |
title |
Molar-Incisor Hypomineralization (MIH). Prevalence among 16-year-old adolescents: A case-control study of children with a low Apgar score at birth and a study on tooth formation and antibiotics in mice |
title_short |
Molar-Incisor Hypomineralization (MIH). Prevalence among 16-year-old adolescents: A case-control study of children with a low Apgar score at birth and a study on tooth formation and antibiotics in mice |
title_full |
Molar-Incisor Hypomineralization (MIH). Prevalence among 16-year-old adolescents: A case-control study of children with a low Apgar score at birth and a study on tooth formation and antibiotics in mice |
title_fullStr |
Molar-Incisor Hypomineralization (MIH). Prevalence among 16-year-old adolescents: A case-control study of children with a low Apgar score at birth and a study on tooth formation and antibiotics in mice |
title_full_unstemmed |
Molar-Incisor Hypomineralization (MIH). Prevalence among 16-year-old adolescents: A case-control study of children with a low Apgar score at birth and a study on tooth formation and antibiotics in mice |
title_sort |
molar-incisor hypomineralization (mih). prevalence among 16-year-old adolescents: a case-control study of children with a low apgar score at birth and a study on tooth formation and antibiotics in mice |
publisher |
UiT The Arctic University of Norway |
publishDate |
2022 |
url |
https://hdl.handle.net/10037/24706 |
geographic |
Norway Tromsø |
geographic_facet |
Norway Tromsø |
genre |
Northern Norway Tromsø |
genre_facet |
Northern Norway Tromsø |
op_relation |
Paper I: Schmalfuss, A., Stenhagen, K.R., Tveit, A.B., Crossner, C.G. & Espelid, I. (2016). Canines are affected in 16-year-olds with molar-incisor hypomineralisation (MIH): an epidemiological study based on the Tromsø study: “Fit Futures”. European Archives of Paediatric Dentistry, 17 (2), 107-113. Also available at https://doi.org/10.1007/s40368-015-0216-6 . Paper II: Sidaly, R., Schmalfuss, A., Skaare, A.B., Sehic, A., Stiris, T. & Espelid, I. (2016). Five-minute Apgar score ≤ 5 and Molar Incisor Hypomineralisation (MIH) - a case control study. BMC Oral Health, 17 (1), 25. Also available in Munin at https://hdl.handle.net/10037/10692 . Paper III: Schmalfuss, A.J., Sehic, A. & Brusevold, I.J. (2021). Effects of antibiotics on the developing enamel in neonatal mice. European Archives of Paediatric Dentistry, 23 , 159-168. Also available in Munin at https://hdl.handle.net/10037/23290 . https://hdl.handle.net/10037/24706 |
op_rights |
openAccess Copyright 2022 The Author(s) |
_version_ |
1766145542477316096 |