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Kerekes-Máthé B, Mártha K, Bănescu C, O’Donnell MB, Brook AH. Genetic and Morphological Variation in Hypodontia of Maxillary Lateral Incisors. Genes (Basel) 2023; 14:231. [PMID: 36672972 PMCID: PMC9858681 DOI: 10.3390/genes14010231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/13/2023] [Accepted: 01/14/2023] [Indexed: 01/18/2023] Open
Abstract
(1) Background: Hypodontia has a multifactorial aetiology, in which genetic factors are a major component. Associated with this congenital absence, the formed teeth may show differences in size and shape, which may vary with the specific genetic variants and with the location of the missing teeth. The aims of the present study were to investigate a specific variant of MSX1, derive morphometric tooth measurements in a sample of patients with isolated maxillary lateral incisor agenesis and matched controls, and model the findings. (2) Methods: Genotyping of the MSX1 rs8670 genetic variant and morphometric measurements with a 2D image analysis method were performed for 26 hypodontia patients and 26 matched controls. (3) Results: The risk of upper lateral incisor agenesis was 6.9 times higher when the T allele was present. The morphometric parameters showed significant differences between hypodontia patients and controls and between the unilateral and bilateral agenesis cases. The most affected crown dimension in the hypodontia patients was the bucco-lingual dimension. In crown shape there was significant variation the Carabelli trait in upper first molars. (4) Conclusions: The MSX1 rs8670 variant was associated with variations in morphological outcomes. The new findings for compensatory interactions between the maxillary incisors indicate that epigenetic and environmental factors interact with this genetic variant. A single-level directional complex interactive network model incorporates the variations seen in this study.
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Affiliation(s)
- Bernadette Kerekes-Máthé
- Department of Morphology of Teeth and Dental Arches, Faculty of Dentistry, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu-Mures, 540142 Targu-Mures, Romania
| | - Krisztina Mártha
- Department of Orthodontics, Faculty of Dentistry, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu-Mures, 540142 Targu-Mures, Romania
| | - Claudia Bănescu
- Genetics Laboratory, Center for Advanced Medical and Pharmaceutical Research, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Targu-Mures, 540142 Targu-Mures, Romania
| | | | - Alan H. Brook
- School of Dentistry, University of Adelaide, Adelaide, SA 5005, Australia
- Dental Institute, Barts and the London Medical Faculty, Queen Mary University of London, London E1 4NS, UK
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R B, P S, Muthu M, Nirmal L, Patil SS. Prevalence of the Cusp of Carabelli – A systematic review and meta-analysis. Ann Hum Biol 2022; 48:572-584. [DOI: 10.1080/03014460.2022.2032339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Bhavyaa R
- Centre for Early Childhood Caries Research (CECCRe), Department of Pediatric and Preventive Dentistry, Sri Ramachandra Faculty of Dental Sciences, Sri Ramachandra Institute of Higher Education and Research, 1, Ramachandra Nagar, Sri Ramachandra Nagar, Chennai, Tamil Nadu 600116, India
| | - Sujitha P
- Department of Pediatric and Preventive Dentistry, SRM Kattankulathur Dental College and Hospital, SRM Nagar, Kattankulathur, Kanchipuram District, Tamil Nadu-603203, India
| | - Murugan Muthu
- Centre for Early Childhood Caries Research (CECCRe), Department of Pediatric and Preventive Dentistry, Sri Ramachandra Faculty of Dental Sciences, Sri Ramachandra Institute of Higher Education and Research, 1, Ramachandra Nagar, Sri Ramachandra Nagar, Chennai, Tamil Nadu 600116, India
| | - Latha Nirmal
- Centre for Early Childhood Caries Research (CECCRe), Department of Pediatric and Preventive Dentistry, Sri Ramachandra Faculty of Dental Sciences, Sri Ramachandra Institute of Higher Education and Research, 1, Ramachandra Nagar, Sri Ramachandra Nagar, Chennai, Tamil Nadu 600116, India
| | - Sneha S Patil
- Centre for Early Childhood Caries Research (CECCRe), Department of Pediatric and Preventive Dentistry, Sri Ramachandra Faculty of Dental Sciences, Sri Ramachandra Institute of Higher Education and Research, 1, Ramachandra Nagar, Sri Ramachandra Nagar, Chennai, Tamil Nadu 600116, India
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Mesiodistal dimensions of teeth in Serbian orthodontic patients with hypodontia. SRP ARK CELOK LEK 2022. [DOI: 10.2298/sarh200410007z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Introduction/Objective. Hypodontia is a common dental anomaly that occurs
either in a non-syndromic form or as a part of various syndromes. It is
considered a multifactorial condition with genetic, epigenetic and
environmental influences, the interplay of which can lead to various
anomalies in tooth size and number. The aim of this study was to assess
mesiodistal tooth dimensions in Serbian hypodontia orthodontic patients and
compare them to healthy controls using digital study models. Methods. Fifty
subjects (30 females, 20 males) divided into two groups - 25 with hypodontia
(15 females, 10 males) and 25 gender-matched controls (15 females, 10 males)
were included in the study. Alginate impressions were taken and plaster
models poured, digitized and imported into the software where mesiodistal
dimensions were obtained. Results. Intra-operator reliability was high. All
teeth in the hypodontia group had smaller mesiodistal dimensions compared to
controls. Statistical significance was noted for all teeth except for upper
canines. No statistically significant differences were found between males
and females in neither the hypodontia nor the control group, except for
lower canines, which were significantly smaller in both hypodontia and
control females. The most commonly missing teeth were upper lateral
incisors, and lower and upper premolars. Conclusion. Hypodontia group
presented with smaller mesiodistal dimensions compared to controls. The
greatest difference in mesiodistal dimensions was found in upper lateral
incisors and lower first molars. Lower canines were significantly larger in
males compared to females in both groups.
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Fernée C, Zakrzewski S, Robson Brown K. Dimorphism in dental tissues: Sex differences in archaeological individuals for multiple tooth types. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 2020; 175:106-127. [PMID: 33247477 DOI: 10.1002/ajpa.24174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 10/29/2020] [Accepted: 11/04/2020] [Indexed: 12/29/2022]
Abstract
OBJECTIVES Dimorphism in the dentition has been observed in human populations worldwide. However, research has largely focused on traditional linear crown measurements. As imaging systems, such as micro-computed tomography (micro-CT), become increasingly more accessible, new dental measurements such as dental tissue size and proportions can be obtained. This research investigates the variation of dental tissues and proportions by sex in archaeological samples. MATERIALS AND METHODS Upper and lower first incisor to second premolar tooth rows were obtained from 30 individuals (n = 300), from 3 archaeological samples. The teeth were micro-CT scanned and surface area and volumetric measurements were obtained from the surface meshes extracted. Dental wear was also recorded and differences between sexes determined. RESULTS Enamel and crown measurements were found to be larger in females. Conversely, dentine and root measurements were larger in males. DISCUSSION The findings support the potential use of dental tissues to estimate sex of individuals from archaeological samples, while also indicating that individuals aged using current dental aging methods may be underaged or overaged due to sex differences in enamel thickness.
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Affiliation(s)
- Christianne Fernée
- Department of Anthropology and Archaeology, University of Bristol, Bristol, UK.,Department of Archaeology, University of Southampton, Southampton, UK
| | - Sonia Zakrzewski
- Department of Archaeology, University of Southampton, Southampton, UK
| | - Kate Robson Brown
- Department of Anthropology and Archaeology, University of Bristol, Bristol, UK
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Higashihori N, Takada JI, Katayanagi M, Takahashi Y, Moriyama K. Frequency of missing teeth and reduction of mesiodistal tooth width in Japanese patients with tooth agenesis. Prog Orthod 2018; 19:30. [PMID: 30123921 PMCID: PMC6098995 DOI: 10.1186/s40510-018-0222-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 06/05/2018] [Indexed: 11/10/2022] Open
Abstract
Background Tooth agenesis can involve one or more congenitally missing teeth (CMT) and is the most common congenital dental anomalies in humans. Tooth agenesis and reduction of mesiodistal tooth width are reportedly associated, suggesting that the pathogenesis of the two conditions is related. The current study analyzed the frequency of tooth agenesis and mesiodistal tooth width in cases of hypodontia (1–5 CMT) and oligodontia (≥ 6 CMT) in Japanese patients based on the hypothesis that reductions in mesiodistal tooth width are more frequently associated with oligodontia than hypodontia. Methods Japanese patients with tooth agenesis were divided into hypodontia cases (60 female and 25 male, mean age 19.6 years, mean CMT number 1.31 ± 1.65) and oligodontia cases (26 female and 25 male, mean age 14.6 years, mean CMT number 8.07 ± 2.39). Controls included patients with a skeletal class I relationship and no CMT (female and 60 male, mean age 20.8 years). Dental casts and orthopantomograms were used to analyze the CMT frequency and mesiodistal tooth width for each group. The Kruskal-Wallis test, the Mann-Whitney U test, and Spearman’s rank correlation were used for statistical analysis. Results In the hypodontia group, mandibular second premolars were the most frequently missing tooth type (25.9%), followed by mandibular and maxillary lateral incisors (19.4 and 17.1%, respectively). In the oligodontia group, mandibular second premolars were the most frequently missing tooth type (88.2%), followed by maxillary second premolars (87.3%) and first premolars (63.7%). In female subjects in the hypodontia group, only maxillary lateral incisors and mandibular first molars were significantly smaller than those of the female control subjects. In contrast, in the oligodontia group, more tooth types were significantly smaller than those of the control, for both sexes. Except for maxillary second premolars in female subjects, correlations were apparent for all tooth types in both sexes. Conclusions Compared to hypodontia, more tooth types exhibited reduced mesiodistal tooth width in oligodontia. Correlations between CMT number and mesiodistal tooth width support the hypothesis that reduction of mesiodistal tooth width are more frequently observed in Japanese oligodontia patients than in Japanese hypodontia patients.
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Affiliation(s)
- Norihisa Higashihori
- Section of Maxillofacial Orthognathics, Department of Maxillofacial/Neck Reconstruction, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan.
| | - Jun-Ichi Takada
- Section of Maxillofacial Orthognathics, Department of Maxillofacial/Neck Reconstruction, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Minami Katayanagi
- Section of Maxillofacial Orthognathics, Department of Maxillofacial/Neck Reconstruction, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuki Takahashi
- Section of Maxillofacial Orthognathics, Department of Maxillofacial/Neck Reconstruction, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
| | - Keiji Moriyama
- Section of Maxillofacial Orthognathics, Department of Maxillofacial/Neck Reconstruction, Graduate School, Tokyo Medical and Dental University, Tokyo, Japan
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Gkantidis N, Katib H, Oeschger E, Karamolegkou M, Topouzelis N, Kanavakis G. Patterns of non-syndromic permanent tooth agenesis in a large orthodontic population. Arch Oral Biol 2017; 79:42-47. [PMID: 28288390 DOI: 10.1016/j.archoralbio.2017.02.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 02/23/2017] [Accepted: 02/27/2017] [Indexed: 12/26/2022]
Abstract
OBJECTIVE The aim of this study is to explore patterns of non-syndromic permanent tooth agenesis in a large orthodontic patient group. DESIGN A record review was performed in various orthodontic clinics to identify white patients with non-syndromic permanent tooth agenesis, excluding 3rd molars. Four hundred and fourteen subjects fulfilled the inclusion criteria. RESULTS In the 414 subjects with tooth agenesis, approximately 70% presented 1-2 missing teeth. Symmetric agenesis patterns were often observed in the sample (by jaw, by side, or crossed quadrants), with prevalence approaching 30% for cases with contralateral tooth agenesis within a jaw. In cases with 1 or 2 missing teeth, from the total number of potential tooth agenesis patterns in the sample, a certain part was evident, limiting the variation to 27.8% (44/158). In the entire sample, both in the maxilla and the mandible a certain incisor/premolar agenesis phenotype was observed in 59.0% of cases in isolated form. CONCLUSIONS Although there was variation in the tooth agenesis patterns, our findings suggest the involvement of particular genetic, epigenetic, and/or environmental factors in the formation of the entire dentition, which often lead to specific tooth agenesis phenotypes in cases where this process is disrupted. The present study provides a comprehensive categorization of orthodontic cases with tooth agenesis and can assist in planning future epidemiological and genetic studies.
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Affiliation(s)
- Nikolaos Gkantidis
- Department of Orthodontics and Dentofacial Orthopedics, University of Bern, Freiburgstrasse 7, CH-3010, Bern, Switzerland.
| | - Hattan Katib
- Department of Orthodontics and Dentofacial Orthopedics, University of Bern, Freiburgstrasse 7, CH-3010, Bern, Switzerland
| | - Elias Oeschger
- Department of Orthodontics and Dentofacial Orthopedics, University of Bern, Freiburgstrasse 7, CH-3010, Bern, Switzerland
| | - Marina Karamolegkou
- Department of Orthodontics, School of Dentistry, University of Athens, 2 Thivon Str, 115 27, Goudi, Athens, Greece
| | - Nikolaos Topouzelis
- Department of Orthodontics, Aristotle University of Thessaloniki, University Campus, 54 124, Thessaloniki, Greece
| | - Georgios Kanavakis
- Department of Orthodontics, Tufts University School of Dental Medicine, 1 Kneeland Street, MA 02111, Boston, USA
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Dhamo B, Vucic S, Kuijpers MAR, Jaddoe VWV, Hofman A, Wolvius EB, Ongkosuwito EM. The association between hypodontia and dental development. Clin Oral Investig 2016; 20:1347-54. [PMID: 26462655 PMCID: PMC4914514 DOI: 10.1007/s00784-015-1622-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 09/28/2015] [Indexed: 11/24/2022]
Abstract
OBJECTIVES In this cross-sectional study, we aimed to investigate the pattern of hypodontia in the Dutch population and determine the association between hypodontia and dental development in children with and without hypodontia, applying three different standards, Dutch, French Canadian, and Belgian, to estimate dental age. METHODS We used dental panoramic radiographs (DPRs) of 1488 children (773 boys and 715 girls), with a mean age of 9.76 years (SD = 0.24) participating in a population-based cohort study in Rotterdam, the Netherlands, born in 2002-2004, and 452 children (219 boys and 233 girls) with a mean age of 9.83 years (SD = 1.09) participating in a mixed-longitudinal, interdisciplinary population-based cohort study in Nijmegen, the Netherlands born in 1960-1968. RESULTS The prevalence of hypodontia in the Generation R Study was 5.6 % (N = 84) and 5.1 % (N = 23) in the Nijmegen Growth Study. Linear regression analysis showed that children with hypodontia had a 0.37 [95 % CI (-0.53,-0.21)] to 0.52 [95 % CI (-0.76,-0.38)] years lower dental age than children without hypodontia. The ordinal regression analysis showed a delay in development of mandibular second premolars [1.68 years; 95 %CI (-1.90,-1.46)], mandibular first premolars [0.57 years; 95 % CI (-0.94,-0.20)], and mandibular second molars [0.47 years; 95 % CI (-0.84,-0.11)]. CONCLUSION These findings suggest that children with hypodontia have a delayed dental development. CLINICAL RELEVANCE The delay of dental development in children with hypodontia should be taken into consideration and therefore orthodontists should recognize that a later start of treatment in these patients may be necessary.
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Affiliation(s)
- Brunilda Dhamo
- Department of Oral & Maxillofacial Surgery, Special Dental Care and Orthodontics, Erasmus University Medical Centre, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
- The Generation R Study Group, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Strahinja Vucic
- Department of Oral & Maxillofacial Surgery, Special Dental Care and Orthodontics, Erasmus University Medical Centre, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
- The Generation R Study Group, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Mette A R Kuijpers
- Department of Orthodontics and Craniofacial Biology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands
| | - Vincent W V Jaddoe
- The Generation R Study Group, Erasmus University Medical Centre, Rotterdam, The Netherlands
- Department of Epidemiology, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Albert Hofman
- The Generation R Study Group, Erasmus University Medical Centre, Rotterdam, The Netherlands
- Department of Epidemiology, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Eppo B Wolvius
- Department of Oral & Maxillofacial Surgery, Special Dental Care and Orthodontics, Erasmus University Medical Centre, PO Box 2040, 3000 CA, Rotterdam, The Netherlands
- The Generation R Study Group, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Edwin M Ongkosuwito
- Department of Oral & Maxillofacial Surgery, Special Dental Care and Orthodontics, Erasmus University Medical Centre, PO Box 2040, 3000 CA, Rotterdam, The Netherlands.
- The Generation R Study Group, Erasmus University Medical Centre, Rotterdam, The Netherlands.
- Department of Orthodontics and Craniofacial Biology, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands.
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