1
|
Franco MMP, Ribeiro CCC, Ladeira LLC, Thomaz EBAF, Alves CMC. Pre- and perinatal exposures associated with molar incisor hypomineralization: Birth cohort, Brazil. Oral Dis 2024; 30:3431-3439. [PMID: 37884359 DOI: 10.1111/odi.14783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2023] [Revised: 10/03/2023] [Accepted: 10/12/2023] [Indexed: 10/28/2023]
Abstract
OBJECTIVE To analyze prenatal and perinatal stressors associated with molar incisor hypomineralization (MIH) in adolescents. METHODS Prospective cohort study collected prenatal (socioeconomic status, maternal age, number of prenatal visits, smoking, obesity during pregnancy, abortion history, gestational hypertension) and perinatal stressors (type of delivery, gestational age, birth weight, intensive care unit-ICU at birth). The outcome was MIH at 18-19 years follow-up (n = 590). MIH was defined according to the Ghanim criteria - Model I. We performed a sensitivity analysis, including opacities demarcated in index tooth, incisive or molars, Model II. Through structural equation modeling, we analyzed direct and mediating pathways between multiple stressors with outcomes. RESULTS MIH was observed in 15.25% (n = 90), and opacities demarcated in any index tooth were observed in 22.8% of adolescents (n = 135). In Model I, no stressor explained MIH significantly, although we watched high standardized coefficients (SC) for low birth weight (SC = 0.223, p = 0.147), lower gestational age (SC = 0.351; p = 0.254), and ICU admission (SC = 0.447, p = 0.254). In Model II, advanced maternal age (SC = 0.148; p < 0.05) and not undergoing prenatal care (SC = 0.384, p < 0.03) explained opacities demarcated in incisors or molars. CONCLUSION Advanced maternal age and not undergoing prenatal care were associated with MIH lesion-like in incisors or molars.
Collapse
Affiliation(s)
- Marcela M P Franco
- Postgraduate Program in Dentistry, Federal University of Maranhão, Maranhão, São Luís, Brazil
| | - Cecilia C C Ribeiro
- Postgraduate Program in Dentistry, Federal University of Maranhão, Maranhão, São Luís, Brazil
| | - Lorena L C Ladeira
- Postgraduate Program in Dentistry, Federal University of Maranhão, Maranhão, São Luís, Brazil
| | | | | |
Collapse
|
2
|
Lopes-Fatturi A, Fonseca-Souza G, Wambier LM, Brancher JA, Küchler EC, Feltrin-Souza J. Genetic polymorphisms associated with developmental defects of enamel: A systematic review. Int J Paediatr Dent 2024. [PMID: 38949474 DOI: 10.1111/ipd.13233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 05/20/2024] [Accepted: 06/15/2024] [Indexed: 07/02/2024]
Abstract
BACKGROUND Polymorphisms in genes related to enamel formation and mineralization may increase the risk of developmental defects of enamel (DDE). AIM To evaluate the existing literature on genetic polymorphisms associated with DDE. DESIGN This systematic review was registered in the PROSPERO (CRD42018115270). The literature search was performed in PubMed, Scopus, Web of Science, LILACS, BBO, Cochrane Library, and in the gray literature. Observational studies assessing the association between DDE and genetic polymorphism were included. The Newcastle-Ottawa Scale was used to assess the risk of bias. RESULTS One thousand one hundred and forty-six articles were identified, and 28 met the inclusion criteria. Five studies presented a low risk of bias. Ninety-two genes related to enamel development, craniofacial patterning morphogenesis, immune response, and hormone transcription/reception were included. Molar-incisor hypomineralization (MIH) and/or hypomineralization of primary second molars (HPSM) were associated with 80 polymorphisms of genes responsible for enamel development, immune response, morphogenesis, and xenobiotic detoxication. A significant association was found between the different clinical manifestations of dental fluorosis (DF) with nine polymorphisms of genes responsible for enamel development, craniofacial development, hormonal transcription/reception, and oxidative stress. Hypoplasia was associated with polymorphisms located in intronic regions. CONCLUSION MIH, HPSM, DF, and hypoplasia reported as having a complex etiology are significantly associated with genetic polymorphisms of several genes.
Collapse
|
3
|
Saraç F, Derelioğlu SŞ, Şengül F, Laloğlu F, Ceviz N. The Evaluation of Oral Health Condition and Oral and Dental Care in Children with Congenital Heart Disease. J Clin Med 2023; 12:jcm12113674. [PMID: 37297868 DOI: 10.3390/jcm12113674] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 05/11/2023] [Accepted: 05/19/2023] [Indexed: 06/12/2023] Open
Abstract
Objective: Congenital heart disease (CHD) plays a key role in oral and dental health regarding its own impacts on teeth (i.e., enamel hypoplasia), infective endocarditis and choice of dental treatment. The purpose of this study's comparing the oral and dental health status in children with or without CHD is to contribute to the literature by determining the effects of CHD on oral and dental health. Material and Methods: The present study was conducted using a descriptive and correlational design and consisted of 581 children aged between 6 months and 18 years who were healthy (n = 364) or experienced CHD (n = 217). CHD-impacted children were classified according to their shunt and stenosis and then their saturation values were noted. In the intraoral examination, caries data (dmft/DMFT, PUFA/pufa), oral hygiene (OHI-S) and enamel defect (DDE) indices were recorded. Statistical analyses were performed using SPSS 26.0 at a significance level of 0.05. Results: In our study, caries index scores of children with or without CHD in primary or permanent dentition were found to be similar. The mean OHI-S index (p < 0.001) and gingivitis findings (p = 0.047) of children with CHD had a higher prevalence than the healthy ones. The incidence of enamel defects was determined as 16.5% in CHD-affected children whereas an incidence rate of 4.7% was observed in healthy children. The mean saturation value of the participants with enamel defects (89 ± 8.9) was observed to be significantly lower (p = 0.03) than the patients with no enamel defects (95 ± 4.2). Conclusions: Whereas the caries index scores of CHD-affected children with a history of hypoxia in primary and permanent dentition were found to be similar to the healthy ones, children with CHD were observed to be more prone to enamel defects and periodontal diseases. Furthermore, considering the risk of infective endocarditis resulting from existing carious lesions and periodontal problems, it is highly important for pediatric cardiologists, pediatricians and pediatric dentists to collaborate in a multidisciplinary manner.
Collapse
Affiliation(s)
- Fatma Saraç
- Department of Pedodontics, Faculty of Dentistry, Atatürk University, 25240 Erzurum, Türkiye
| | - Sera Şimşek Derelioğlu
- Department of Pedodontics, Faculty of Dentistry, Atatürk University, 25240 Erzurum, Türkiye
| | - Fatih Şengül
- Department of Pedodontics, Faculty of Dentistry, Atatürk University, 25240 Erzurum, Türkiye
| | - Fuat Laloğlu
- Department of Pediatrics, Division of Pediatric Cardiology, Faculty of Medicine, Atatürk University, 25240 Erzurum, Türkiye
| | - Naci Ceviz
- Department of Pediatrics, Division of Pediatric Cardiology, Faculty of Medicine, Atatürk University, 25240 Erzurum, Türkiye
| |
Collapse
|
4
|
Kimura S, Takeshita N, Oyanagi T, Seki D, Jiang W, Hidaka K, Fukumoto S, Takahashi I, Takano-Yamamoto T. HIF-2α Inhibits Ameloblast Differentiation via Hey2 in Tooth Development. J Dent Res 2022; 101:1637-1644. [PMID: 35912776 DOI: 10.1177/00220345221111971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Enamel is the highly mineralized outer layer of teeth; the cells responsible for enamel formation are ameloblasts. Local hypoxia and hypoxia inducible factor (HIF) in embryonic tissues are important to promote normal organogenesis. However, hypoxic state in tooth germs and the roles of HIF in ameloblast differentiation have not been understood. The aim of this study is to clarify the role of HIF in ameloblast differentiation during tooth germ development. We found that tooth germs were under hypoxia and HIF-1α and HIF-2α were expressed in tooth germs in embryonic mice. Then, we used HIF inhibitors to evaluate the function of HIF during tooth germ development. The HIF-2α inhibitor significantly decreased the size of tooth germs in organ culture, while the HIF-1α inhibitor did not apparently affect the size of tooth germs. The HIF-2α inhibitor enhanced the expression of amelogenin, a marker of ameloblast differentiation, in the tooth germs in organ culture and rat dental epithelial SF2 cells. Moreover, we found that the HIF-2α inhibitor-stimulating amelogenin expression was regulated by hes-related family basic helix-loop-helix transcription factor with YRPW motif 2(Hey2) in SF2 cells. These findings suggest that the HIF-2α-Hey2 axis plays an important role in ameloblast differentiation during tooth germ development.
Collapse
Affiliation(s)
- S Kimura
- Division of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan
| | - N Takeshita
- Division of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan.,Section of Orthodontics and Dentofacial Orthopedics, Faculty of Dental Science, Kyushu University, Fukuoka, Fukuoka, Japan
| | - T Oyanagi
- Division of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan
| | - D Seki
- Division of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan
| | - W Jiang
- Division of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan
| | - K Hidaka
- Section of Orthodontics and Dentofacial Orthopedics, Faculty of Dental Science, Kyushu University, Fukuoka, Fukuoka, Japan
| | - S Fukumoto
- Division of Pediatric Dentistry, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan.,Section of Oral Medicine for Children, Faculty of Dental Science, Kyushu University, Fukuoka, Fukuoka, Japan
| | - I Takahashi
- Section of Orthodontics and Dentofacial Orthopedics, Faculty of Dental Science, Kyushu University, Fukuoka, Fukuoka, Japan
| | - T Takano-Yamamoto
- Division of Orthodontics and Dentofacial Orthopedics, Graduate School of Dentistry, Tohoku University, Sendai, Miyagi, Japan.,Department of Biomaterials and Bioengineering, Faculty of Dental Medicine, Hokkaido University, Sapporo, Hokkaido, Japan
| |
Collapse
|
5
|
Liu F, Reichl FX, Milz S, Wölfle UC, Kühnisch J, Schmitz C, Geist J, Hickel R, Högg C, Sternecker K. Disrupted biomineralization in zebra mussels after exposure to bisphenol-A: Potential implications for molar-incisor hypomineralization. Dent Mater 2022; 38:689-699. [DOI: 10.1016/j.dental.2022.02.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 01/27/2022] [Accepted: 02/20/2022] [Indexed: 12/28/2022]
|
6
|
Garot E, Rouas P, Somani C, Taylor GD, Wong F, Lygidakis NA. An update of the aetiological factors involved in molar incisor hypomineralisation (MIH): a systematic review and meta-analysis. Eur Arch Paediatr Dent 2022; 23:23-38. [PMID: 34164793 DOI: 10.1007/s40368-021-00646-x] [Citation(s) in RCA: 62] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 06/02/2021] [Indexed: 12/16/2022]
Abstract
PURPOSE To systematically review the aetiological factors associated with molar incisor hypomineralisation (MIH). To this day, the aetiology remains unknown. Determining risk factors would allow risk assessment and enhance early diagnosis of MIH in young patients. The aim was to assess, evaluate and summarise the relationship between MIH and reported aetiological hypotheses. METHODS Electronic database searches of MEDLINE, EMBASE, EBSCO, LILACS and Cochrane Library were conducted. Authors conformed to PRISMA guidelines. Studies were screened, data extracted, assessment of risk of bias and calibration was completed by two independent reviewers. Meta-analyses with heterogeneity calculations were performed. RESULTS Of the potential 8949 studies, 64 studies were included in the qualitative analysis whilst 45 were included in the quantitative analysis. Prenatal factors: results are inconclusive as only unspecified maternal illnesses appear to be linked to MIH. Perinatal factors: prematurity (OR 1.45; 95% CI 1.24-1.70; p = 0.0002) and caesarean delivery (OR 1.45; 95% CI 1.09, 1.93; p < 0.00001) are associated with an increased risk of developing MIH. Birth complications are also highlighted. These three factors can lead to hypoxia, and children with perinatal hypoxia are more likely to develop MIH (OR 2.76; 95% CI 2.09-3.64; p < 0.0001). Postnatal factors: measles, urinary tract infection, otitis media, gastric disorders, bronchitis, kidney diseases, pneumonia and asthma are associated with MIH. Fever and antibiotic use, which may be considered as consequences of childhood illnesses, are also associated with MIH. Genetic factors: an increasing number of studies highlight the genetic and epigenetic influences in the development of MIH. CONCLUSION Several systemic and genetic and/or epigenetic factors acting synergistically or additively are associated with MIH, revealing a multifactorial aetiology model. Peri- and postnatal aetiological factors are more likely to increase the odds of causing MIH than prenatal factors.
Collapse
Affiliation(s)
- E Garot
- Université de Bordeaux, UFR Des Sciences Odontologiques, Bordeaux, France. .,CHU de Bordeaux, Pôle médecine et chirurgie bucco-dentaire, Pellegrin, Bordeaux, France. .,Université de Bordeaux, PACEA, UMR 5199, Pessac, France.
| | - P Rouas
- Université de Bordeaux, UFR Des Sciences Odontologiques, Bordeaux, France.,CHU de Bordeaux, Pôle médecine et chirurgie bucco-dentaire, Pellegrin, Bordeaux, France.,Université de Bordeaux, PACEA, UMR 5199, Pessac, France
| | - C Somani
- Paediatric Dentistry, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - G D Taylor
- School of Dental Sciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - F Wong
- Paediatric Dentistry, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - N A Lygidakis
- Private Paediatric Dental Clinic, 2 Papadiamantopoulou Street, 11528, Athens, Greece
| |
Collapse
|
7
|
Lygidakis NA, Garot E, Somani C, Taylor GD, Rouas P, Wong FSL. Best clinical practice guidance for clinicians dealing with children presenting with molar-incisor-hypomineralisation (MIH): an updated European Academy of Paediatric Dentistry policy document. Eur Arch Paediatr Dent 2022; 23:3-21. [PMID: 34669177 PMCID: PMC8926988 DOI: 10.1007/s40368-021-00668-5] [Citation(s) in RCA: 89] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 09/22/2021] [Indexed: 12/16/2022]
Abstract
AIM To update the existing European Academy of Paediatric Dentistry (EAPD) 2010 policy document on the 'Best Clinical Practice guidance for clinicians dealing with children presenting with Molar-Incisor-Hypomineralisation (MIH).' METHODS Experts, assigned the EAPD, worked on two different topics: (A) Aetiological factors involved in MIH, and (B) Treatment options for the clinical management of MIH. The group prepared two detailed systematic reviews of the existing literature relevant to the topics and following a consensus process produced the updated EAPD policy document on the 'Best Clinical Practice guidance for clinicians dealing with children presenting with molar-incisor-hypomineralisation (MIH).' The GRADE system was used to assess the quality of evidence regarding aetiology and treatment which was judged as HIGH, MODERATE, LOW or VERY LOW, while the GRADE criteria were used to indicate the strength of recommendation regarding treatment options as STRONG or WEAK/CONDITIONAL. RESULTS (A) Regarding aetiology, it is confirmed that MIH has a multifactorial aetiology with the duration, strength and timing of occurrence of the aetiological factors being responsible for the variable clinical characteristics of the defect. Perinatal hypoxia, prematurity and other hypoxia related perinatal problems, including caesarean section, appear to increase the risk of having MIH, while certain infant and childhood illnesses are also linked with MIH. In addition, genetic predisposition and the role of epigenetic influences are becoming clearer following twin studies and genome and single-nucleotide polymorphisms analyses in patients and families. Missing genetic information might be the final key to truly understand MIH aetiology. (B) Regarding treatment options, composite restorations, preformed metal crowns and laboratory indirect restorations provide high success rates for the posterior teeth in appropriate cases, while scheduled extractions provide an established alternative option in severe cases. There is great need for further clinical and laboratory studies evaluating new materials and non-invasive/micro-invasive techniques for anterior teeth, especially when aesthetic and oral health related quality of life (OHRQoL) issues are concerned. CONCLUSIONS MIH has been studied more extensively in the last decade. Its aetiology follows the multifactorial model, involving systemic medical and genetic factors. Further focused laboratory research and prospective clinical studies are needed to elucidate any additional factors and refine the model. Successful preventive and treatment options have been studied and established. The appropriate choice depends on the severity of the defects and the age of the patient. EAPD encourages the use of all available treatment options, whilst in severe cases, scheduled extractions should be considered.
Collapse
Affiliation(s)
- N A Lygidakis
- Private Paediatric Dental Clinic, 2 Papadiamantopoulou Street, 11528, Athens, Greece.
| | - E Garot
- Univ. de Bordeaux, UFR des Sciences Odontologiques, Bordeaux, France
- CHU de Bordeaux, Pôle médecine et chirurgie bucco-dentaire, Pellegrin, Bordeaux, France
- Univ. de Bordeaux, PACEA, UMR 5199, Pessac, France
| | - C Somani
- Paediatric Dentistry, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| | - G D Taylor
- School of Dental Sciences, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - P Rouas
- Univ. de Bordeaux, UFR des Sciences Odontologiques, Bordeaux, France
- CHU de Bordeaux, Pôle médecine et chirurgie bucco-dentaire, Pellegrin, Bordeaux, France
- Univ. de Bordeaux, PACEA, UMR 5199, Pessac, France
| | - F S L Wong
- Paediatric Dentistry, Institute of Dentistry, Barts and The London School of Medicine and Dentistry, Queen Mary University of London, London, UK
| |
Collapse
|
8
|
Effects of antibiotics on the developing enamel in neonatal mice. Eur Arch Paediatr Dent 2022; 23:159-168. [PMID: 34716571 PMCID: PMC8926962 DOI: 10.1007/s40368-021-00677-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 10/19/2021] [Indexed: 12/16/2022]
Abstract
PURPOSE Identifying factors causing Molar-Incisor Hypomineralization (MIH) is an ongoing challenge. Preterm infants, routinely treated with antibiotics in cases of suspected sepsis, are more commonly affected by dental developmental defects. This study aimed to investigate the effects of gentamycin and ampicillin on the developing enamel in neonatal CD-1 mice in vivo. METHODS Neonatal mice were randomized into a study (n = 36) and a control (n = 35) group. Antibiotics were injected intravenously for 4 days. All mice were sacrificed after 15-18 days. Micro-CT was used to analyse the mineral density (MD) of the enamel and the proportion of the enamel object volume (vol%) in first molars and incisors. RESULTS We demonstrated a significantly lower vol% enamel in the maxillary (30.9% vs. 32.7%; p = 0.004) and mandibular (32.5% vs. 34.6%; p = 0.015) molars in the study group than in the controls. The incisors were divided into segments upon analysis. We demonstrated both lower vol% and lower MD of the enamel in most segments in treated individuals compared to controls (p < 0.05). CONCLUSION The reduced MD and vol% in the molars and incisors are likely to have been caused by the antibiotics given during tooth development. The presented analysis of teeth in neonatal mice with micro-CT could be a valid model for further research on dental developmental defects.
Collapse
|
9
|
Mohamed RN, Basha S, Al-Thomali Y, Al Zahrani FS, Ashour AA, Al Shamrani AS, Almutair NE. Frequency of molar incisor hypomineralization and associated factors among children with special health care needs. Ann Saudi Med 2021; 41:238-245. [PMID: 34420400 PMCID: PMC8380275 DOI: 10.5144/0256-4947.2021.238] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Molar incisor hypomineralization (MIH) is a frequently encountered oral condition that varies from mild opacities to posteruptive enamel breakdown. No previous published studies have investigated the frequency of MIH and associated risk factors among children with special health care needs (CSHCN) to our awareness. OBJECTIVES Assess the frequency of MIH and associated risk factors among CSHCN. DESIGN Cross-sectional. SETTING Schools in provincial city of Saudi Arabia. PATIENTS AND METHODS The study was conducted among 400 (180 boys and 220 girls) special needs children. Diagnosis of MIH was according to the European Academy of Paediatric Dentistry criteria. MAIN OUTCOME MEASURE Result of logistic regression analysis that assessed the association between MIH prevalence and associated prenatal, perinatal, and postnatal factors. SAMPLE SIZE 400 (180 boys and 220 girls) special needs children. RESULTS Among 400 CSHCN, 98 (24.5%) presented with MIH. Children with multiple disabilities had a 3.89 times greater risk of MIH (95% CI: 1.91-6.19, P=.002). Children with positive prenatal factors had an adjusted odds ratio (aOR) of 2.31 times for MIH (95% CI: 1.22-4.73, P=.012). Children with a childhood infection history had an aOR of 2.43 times for MIH (95% CI: 1.31-5.85, P=.014). Children with a breastfeeding history >18 months had an aOR of 3.73 for MIH (95% CI: 1.62-8.60, P=.002). Permanent maxillary first molars were the most frequently affected teeth, and demarcated opacity was the most frequent MIH type. CONCLUSION MIH should be recognized as one of the prevalent oral health problems among CSHCN to prevent tooth mortality. LIMITATIONS A cross-sectional study cannot establish a causal relationship. CONFLICTS OF INTEREST None.
Collapse
Affiliation(s)
| | - Sakeenabi Basha
- From the Faculty of Dentistry, Taif University, Taif, Saudi Arabia
| | | | | | | | | | | |
Collapse
|
10
|
Kim EJ, Lee JE, Yoon S, Lee DJ, Mai HN, Ida-Yonemochi H, Choi J, Jung HS. Hypoxia-Responsive Oxygen Nanobubbles for Tissues-Targeted Delivery in Developing Tooth Germs. Front Cell Dev Biol 2021; 9:626224. [PMID: 33659251 PMCID: PMC7917193 DOI: 10.3389/fcell.2021.626224] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 01/12/2021] [Indexed: 11/13/2022] Open
Abstract
Hypoxia is a state of inadequate supply of oxygen. Increasing evidence indicates that a hypoxic environment is strongly associated with abnormal organ development. Oxygen nanobubbles (ONBs) are newly developed nanomaterials that can deliver oxygen to developing tissues, including hypoxic cells. However, the mechanisms through which nanobubbles recover hypoxic tissues, such as developing tooth germs remain to be identified. In this study, tooth germs were cultured in various conditions: CO2 chamber, hypoxic chamber, and with 20% ONBs for 3 h. The target stages were at the cap stage (all soft tissue) and bell stage (hard tissue starts to form). Hypoxic tooth germs were recovered with 20% ONBs in the media, similar to the tooth germs incubated in a CO2 chamber (normoxic condition). The tooth germs under hypoxic conditions underwent apoptosis both at the cap and bell stages, and ONBs rescued the damaged tooth germs in both the cap and bell stages. Using kidney transplantation for hard tissue formation in vivo, amelogenesis and dentinogenesis imperfecta in hypoxic conditions at the bell stage were rescued with ONBs. Furthermore, glucose uptake by tooth germs was highly upregulated under hypoxic conditions, and was restored with ONBs to normoxia levels. Our findings indicate that the strategies to make use of ONBs for efficient oxygen targeted delivery can restore cellular processes, such as cell proliferation and apoptosis, glucose uptake, and hypomineralization in hypoxic environments.
Collapse
Affiliation(s)
- Eun-Jung Kim
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Taste Research Center, Oral Science Research Center, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Ji-Eun Lee
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Taste Research Center, Oral Science Research Center, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Semi Yoon
- School of Integrative Engineering, Chung-Ang University, Seoul, South Korea
| | - Dong-Joon Lee
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Taste Research Center, Oral Science Research Center, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Han Ngoc Mai
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Taste Research Center, Oral Science Research Center, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, South Korea
| | - Hiroko Ida-Yonemochi
- Division of Anatomy and Cell Biology of the Hard Tissue, Department of Tissue Regeneration and Reconstruction, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Jonghoon Choi
- School of Integrative Engineering, Chung-Ang University, Seoul, South Korea
| | - Han-Sung Jung
- Division in Anatomy and Developmental Biology, Department of Oral Biology, Taste Research Center, Oral Science Research Center, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, South Korea
| |
Collapse
|
11
|
Tulek A, Saeed M, Mulic A, Stenhagen KR, Utheim TP, Galtung HK, Khuu C, Nirvani M, Kristiansen MS, Sehic A. New animal model of extrinsic dental erosion-Erosive effect on the mouse molar teeth. Arch Oral Biol 2018; 96:137-145. [PMID: 30241000 DOI: 10.1016/j.archoralbio.2018.08.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/23/2018] [Accepted: 08/23/2018] [Indexed: 10/28/2022]
Abstract
OBJECTIVE Consumption of acidic food and drinks is considered as important risk factor for development of dental erosion. There are several in vitro and in situ studies focusing on the risk indicators and preventive treatment, however, the need for a standardized animal model has been emphasised for many years. The aim was to establish an animal model of extrinsic dental erosion, which may serve as a standard for future studies to improve our understanding of the erosion. DESIGN Two acidic drinks, sports drink and cola drink, were given to young mice for six weeks. Experimental and control (water) molars and incisors were dissected out and observed by scanning electron microscopy (SEM). Mandibular first molars were subsequently ground transversely and observed again by SEM. The tooth height and enamel thickness were measured on the SEM images. RESULTS The lingual surface of the mandibular molars was most eroded after consumption of acidic drinks. The cola drink exhibited higher erosive effect on mandibular molars compared to sports drink. The lingual tooth height, compared to control, was about 34% and 18% lower in the cola drink and sports drink molars, respectively. Compared to the control molars, the lingual enamel was about 23% thinner in the sports drink molars and totally eroded on the certain lingual areas of the cola drink molars. CONCLUSIONS This new animal model of extrinsic dental erosion and the presented method with ground molars observed in SEM are suitable for further studies, which will gain deeper insights into the erosive disease.
Collapse
Affiliation(s)
- Amela Tulek
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Postboks 1052 Blindern, 0316 Oslo, Norway.
| | - Muhammad Saeed
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Postboks 1052 Blindern, 0316 Oslo, Norway.
| | - Aida Mulic
- Nordic Institute of Dental Materials (NIOM AS), Sognsveien 70A, 0855 Oslo, Norway.
| | - Kjersti Refsholt Stenhagen
- Department of Cariology, Institute of Clinical Dentistry, University of Oslo, Postboks 1109 Blindern, 0317 Oslo, Norway.
| | - Tor Paaske Utheim
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Postboks 1052 Blindern, 0316 Oslo, Norway; Department of Medical Biochemistry, Oslo University Hospital, Postboks 4950 Nydalen, 0424 Oslo, Norway; Department of Maxillofacial Surgery, Oslo University Hospital, Postboks 4950 Nydalen, 0424 Oslo, Norway.
| | - Hilde Kanli Galtung
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Postboks 1052 Blindern, 0316 Oslo, Norway.
| | - Cuong Khuu
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Postboks 1052 Blindern, 0316 Oslo, Norway.
| | - Minou Nirvani
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Postboks 1052 Blindern, 0316 Oslo, Norway.
| | - Marthe Smedmoen Kristiansen
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Postboks 1052 Blindern, 0316 Oslo, Norway.
| | - Amer Sehic
- Department of Oral Biology, Faculty of Dentistry, University of Oslo, Postboks 1052 Blindern, 0316 Oslo, Norway; Department of Maxillofacial Surgery, Oslo University Hospital, Postboks 4950 Nydalen, 0424 Oslo, Norway.
| |
Collapse
|
12
|
Petronijevic S, Stig S, Gao J, Halstensen TS. Amelogenin specific IgA and IgG in children with untreated coeliac disease. Eur J Oral Sci 2016; 124:526-533. [DOI: 10.1111/eos.12314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/26/2016] [Indexed: 11/27/2022]
Affiliation(s)
- Sanja Petronijevic
- Department of Oral Biology; Faculty of Dentistry; University of Oslo; Oslo Norway
| | - Solveig Stig
- Department of Oral Biology; Faculty of Dentistry; University of Oslo; Oslo Norway
| | - Jian Gao
- Department of Oral Biology; Faculty of Dentistry; University of Oslo; Oslo Norway
| | - Trond S. Halstensen
- Department of Oral Biology; Faculty of Dentistry; University of Oslo; Oslo Norway
| |
Collapse
|
13
|
Sidaly R, Schmalfuss A, Skaare AB, Sehic A, Stiris T, Espelid I. Five-minute Apgar score ≤ 5 and Molar Incisor Hypomineralisation (MIH) - a case control study. BMC Oral Health 2016; 17:25. [PMID: 27449152 PMCID: PMC4957350 DOI: 10.1186/s12903-016-0253-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 07/13/2016] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND The aetiology of molar incisor hypomineralisation (MIH) is unclear. The asymmetric distribution of MIH in the dentition may indicate that an insult of short duration that affects ameloblasts at a vulnerable stage could be a causative factor. Apgar ≤ 5 at 5 min may indicate asphyxia (hypoxic-ischemic insult) during birth. It was hypnotised that low Apgar score during birth may cause MIH. The present study aimed to examine a possible association between Apgar ≤ 5 at 5 min and the occurrence of MIH. METHOD Two study groups were selected for examination. The cases comprised 67 children aged 8-10 years born with Apgar score equal to or below 5 after 5 min. The control group comprised 157 age-matched healthy children. First permanent molars, second primary molars and all permanent incisors were examined in all children. Clinical examination was undertaken by two calibrated examiners and intraoral close-up photographs of the teeth were later evaluated by three calibrated and blinded clinicians. Demarcated opacities, post-eruptive breakdown, atypical restorations and extractions due to MIH, according to the criteria of the European Association of Paediatric Dentistry, were assessed. RESULTS The prevalence of MIH did not differ between the two groups. A chi-square test failed to confirm any statistically significant relationship between 5-min Apgar scores and MIH occurrence. In addition, there was no statistically significant relationship between the number of affected first permanent molars in cases and controls. CONCLUSION There was no association between Apgar ≤ 5 at 5 min and the occurrence of MIH.
Collapse
Affiliation(s)
- Rivan Sidaly
- Department of Biomaterials, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Oslo, Norway. .,Department of Biomaterials, Faculty of Dentistry, PO Box 1109, Blindern, N-0317, Oslo, Norway.
| | - Andreas Schmalfuss
- Department of Clinical Dentistry, UiT The Arctic University of Norway, Tromsø, Norway
| | - Anne B Skaare
- Department of Paediatric Dentistry and Behavioural Science, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Amer Sehic
- Institute of Oral Biology, Faculty of Dentistry, University of Oslo, Oslo, Norway
| | - Tom Stiris
- Department of Neonatology, Oslo University Hospital, Oslo, Norway
| | - Ivar Espelid
- Department of Paediatric Dentistry and Behavioural Science, Institute of Clinical Dentistry, Faculty of Dentistry, University of Oslo, Oslo, Norway
| |
Collapse
|