scholarly journals Developmental hypomineralization of the enamel of the first permanent and the second deciduous molars - report of two cases

2021 ◽  
pp. 17-17
Author(s):  
Luka Hocevar ◽  
Zoran Mandinic ◽  
Jelena Mandic ◽  
Alenka Pavlic
Keyword(s):  
Dental Enamel ◽  
Developmental Defect ◽  
Molar Incisor Hypomineralisation ◽  
Enamel Microstructure ◽  
Appropriate Treatment ◽  
Permanent Molars ◽  
Deciduous Molar ◽  
Deciduous Molars ◽  
Incisor Hypomineralisation ◽  
First Permanent Molars

Introduction. Molar-incisor hypomineralisation (MIH) is a developmental defect of dental enamel that affects one to all four first permanent molars (FPM) and frequently permanent incisors. Enamel aberrations are observed as demarcated opacities of different colours (from white to brown) and as posteruptive enamel breakdown (PEB). Clinically similar pathological signs can also be present in deciduous molars. Case outline. Histology of an FPM and a second deciduous molar (SDM) was performed after extraction from two unrelated patients with MIH due to inflammatory complications. Tooth samples were analysed using a stereomicroscope (SM), light microscope (LM) and scanning electron microscope (SEM). Enamel thickness of both affected teeth was normal. An obvious distinction in enamel microstructure was observed between the normally developed and the MIH-hypomineralised enamel with SM, LM, and SEM. Conclusion. In MIH patients, regular dental visits enable early diagnosis of the disease and appropriate treatment of the patient as soon as possible, with included preventive measures.

Molar-incisor hypomineralisation (MIH) – aetiology, clinical picture, treatment

2019 ◽  
Vol 24 (1) ◽  
Author(s):  
Sylwia Kuderewska ◽  
Monika Stawiecka ◽  
Renata Milewska ◽  
Anna Kuźmiuk ◽  
Ewa Chorzewska
Keyword(s):  
Clinical Picture ◽  
Dental Enamel ◽  
Permanent Teeth ◽  
Molar Incisor Hypomineralisation ◽  
Pubmed Database ◽  
Tissue Reconstruction ◽  
Permanent Molars ◽  
Severity Of The Disease ◽  
Incisor Hypomineralisation ◽  
First Permanent Molars

Introdution. Molar-incisor hypomineralisation is a disorder of dental enamel of a systemic origin. It may affect one or all four first permanent molars, and often involves permanent incisors. Aim. The aim of this study was to present views on aetiology, clinical picture and treatment of molar-incisor hypomineralisation. Material and methods. PubMed database was reviewed for years 2003-2017, the search criteria were: “molar incisor”, “hypomineralisation”, “permanent teeth”. Results. The aetiology of MIH is multifactorial and not fully explained. Authors agree that the general health during the first 3-4 years of life has a major impact on this disorder. The clinical picture includes demarcated white, yellow or brown tissue spots, and increased porosity of the enamel. Enamel damage and defects can also occur. Therapeutic management depends on the severity of the disease and includes intensive prevention, hard tissue reconstruction, and extractions. Conclusions. Due to the increasing prevalence of this disorder, special attention should be paid to children whose health status is or was bad in the first 3-4 years of life. They are at a higher risk for this condition.

scholarly journals Demarcated Opacities as Predictors of Progression of the Molar Incisor Hypomineralisation: a Pilot Study

2020 ◽  
Vol 54 (4) ◽  
pp. 420-430
Author(s):  
Amra Arslanagić ◽  
Nina Marković ◽  
Elmedin Bajrić ◽  
Lejla Burnazović Ristić
Keyword(s):  
Independent Predictor ◽  
Tooth Surface ◽  
Molar Incisor Hypomineralisation ◽  
Strong Positive Correlation ◽  
Number Of Teeth ◽  
Occlusal Surfaces ◽  
Progression Of Disease ◽  
Permanent Molars ◽  
Incisor Hypomineralisation ◽  
First Permanent Molars

Objectives: Demarcated opacities (DO) on teeth affected by Molar Incisor Hypomineralisation (MIH) were observed to investigate if parameters of DO existence and the number of teeth affected could be used to predict the progression of disease. Material and methods: In 2009, the MIH prevalence was 11.5% (n=51) among 446 subjects in Sarajevo, aged from 6 to 9 years. In subjects with MIH who gave consent for further participation (n=25), the teeth with DO were observed after a 12-month period. Results: our sample included 29 permanent incisors and 14 first permanent molars with DO. The number of teeth with light opacities was significantly higher than the number of teeth with dark opacities. Opacities were more numerous on surfaces which were not exposed to masticatory pressure. The size of tooth surface affected by DO occurrence ranged from 1.33% to 56.56%. The number of affected teeth ranged from two to six. A strong positive correlation between MIH progression and dark colored opacities located on the occlusal/incisal surface of teeth was noted. Larger part of tooth surface was affected by hypomineralisation in the case of dark-colored opacities. The DO presence on incisors was more likely to be located on vestibular surfaces and on the first permanent molars on their occlusal surfaces. Conclusions: The color of DO occurrence was the best predictor for MIH progression both independently and in combination with the number of affected teeth. Location of DO occurrence was a good independent predictor for MIH progression. It is important to collect information about color and location of DO presence.

scholarly journals Decision making regarding management of compromised first permanent molars in patients with molar incisor hypomineralisation: A comparison of orthodontists and paediatric dentists

2021 ◽  
pp. 146531252110411
Author(s):  
Aslam Alkadhimi ◽  
Susan J Cunningham ◽  
Susan Parekh ◽  
Joe H Noar ◽  
Helen C Travess
Keyword(s):  
Decision Making ◽  
British Society ◽  
Molar Incisor Hypomineralisation ◽  
Online Questionnaire ◽  
Management Options ◽  
Clinical Scenarios ◽  
Permanent Molars ◽  
Multidisciplinary Clinics ◽  
Incisor Hypomineralisation ◽  
First Permanent Molars

Objectives: To obtain the views and opinions of specialist members of the British Orthodontic Society (BOS) and British Society of Paediatric Dentistry (BSPD) in relation to (1) the multidisciplinary management of patients affected by molar incisor hypomineralisation (MIH) and (2) the diagnosis and management of MIH-affected first permanent molars (FPMs) in four clinical scenarios, and compare the responses to those of an expert panel consensus. Design: A prospective cross-sectional study. Setting: Part 1: Eastman Dental Institute and part 2: online questionnaire. Methods: Four clinical scenarios showing patients with differing severities of MIH affected FPMs were considered by a panel of orthodontists and paediatric dentists to agree on the severity of MIH and management. A 21-item online questionnaire sent to both specialist groups, after pilot study. The questionnaire covered demographics, access to multidisciplinary clinics, clinicians’ opinions on various management aspects, and questions relating to the management of the same 4 clinical scenarios. Results: The overall response was 21.9% (20% of the orthodontists and 45% of the paediatric dentists). Approximately half of the respondents from both groups felt that these patients should be managed through a multidisciplinary treatment type clinic (49.0% of the orthodontists and 47.2% of the paediatric dentists). Only 40.3% of the orthodontists and 35.0% of the paediatric dentists agreed completely with the panel consensus on all management options. When assessing overall agreement on all four FPMs for all scenarios, agreement was predicted by severity of MIH (P<0.001) and complexity of malocclusion (P<0.001) where more complex malocclusions and more severe MIH resulted in poorer agreement, but specialty was not a significant predictor (P=0.21). Conclusion: The majority of the respondents from both groups, felt that managing patients with MIH affected FPMs is challenging. Approximately half of the orthodontists and the paediatric dentists, felt that MIH affected patients should be managed through a multidisciplinary type clinic. Managing more severe cases on multidisciplinary clinics is indicated, to incorporate specialist input into decision making.

scholarly journals Prevalence of Molar Incisor Hypomineralisation Among School Children in Kavre

2015 ◽  
Vol 12 (1) ◽  
pp. 38-42 ◽  
Author(s):  
R Shrestha ◽  
S Upadhaya ◽  
M Bajracharya
Keyword(s):  
School Children ◽  
Paediatric Dentistry ◽  
Molar Incisor Hypomineralisation ◽  
European Academy ◽  
Maxillary Molars ◽  
Permanent Molars ◽  
Structural Loss ◽  
Mandibular Teeth ◽  
Incisor Hypomineralisation ◽  
First Permanent Molars

BackgroundMolar incisor hypomineralisation is defined as the hypomineralisation of systemic origin of one to four permanent first molars, and frequently associated with affected incisors. Till date, there is no data available on molar incisor hypomineralisation in any parts of Nepal.ObjectiveTo determine the prevalence and characteristics of Molar incisor hypomineralisation in 7 to 12 years old school children of Kavre.MethodA total of 749 school children of age 7 to 12 years from four different randomly selected schools with at least one of the first permanent molars fully or partially erupted were evaluated using European Academy of Paediatric Dentistry criteria for molar incisor hypomineralisation. The examinations were conducted at respective schools by a single calibrated examiner.ResultMolar incisor hypomineralisation was present in 13.7% of children. No gender differences were found.The mild type of defect (without structural loss of tooth) was the most prevalent type of molar incisor hypomineralisation with white/creamy demarcated opacities more frequent than yellow/brown demarcated opacities. Post eruptive breakdown was more in boys than in girls and this difference was statistically significant (p<0.05). Also, maxillary molars were affected more than mandibular molars and this difference was also statistically significant (p<0.05).ConclusionThe prevalence of molar incisor hypomineralisation in Kavre was 13.7%.Demarcated opacities were more prevalent than breakdown. The hypomineralised defect was more prevalent in maxillary teeth than in mandibular teeth. The severity of defect increased with age and there was no difference in prevalence between girls and boys.Kathmandu University Medical Journal Vol.12(1) 2014: 38-42

scholarly journals Extraction of first permanent molars severely affected by molar incisor hypomineralisation: a retrospective audit

2021 ◽  
Author(s):  
I. J. Brusevold ◽  
K. Kleivene ◽  
B. Grimsøen ◽  
A. B. Skaare
Keyword(s):  
Orthodontic Treatment ◽  
Molar Incisor Hypomineralisation ◽  
Second Molar ◽  
Permanent Molar ◽  
Orthodontic Space Closure ◽  
Space Closure ◽  
Permanent Molars ◽  
Incisor Hypomineralisation ◽  
First Permanent Molars

Abstract Aim The aim of this study was to evaluate possible spontaneous space closure after extraction of first permanent molars in children and their eventual need for orthodontic treatment. Methods Twenty-seven children with at least one first permanent molar planned for extraction were enrolled in the study. The children were referred to the Department of Paediatric Dentistry, University of Oslo, between 2009 and 2017. All extracted teeth were severely affected by Molar Incisor Hypomineralisation and/or caries. The children and their parents had consented to extraction and follow-up. Data were analysed with SPSS 26. Results The age of the children was between 5.5 and 12.1 years (mean 8.7) at extraction. The mean follow-up time was 3.2 years (range 1.1–6.3). Sixteen children (59.3%) had all four molars extracted, five (18.5%) had three, five had two and one had one molar extracted. In the maxilla, the second permanent molar had erupted in the place of the first molar in all the children, and none of them needed orthodontic space closure. In the mandible, eight children (29.6%) needed orthodontic treatment to close the spaces after extraction. In three children, the second molar was not yet erupted and treatment need was not settled. Conclusion Extraction of severely affected first permanent molars before the eruption of the second molar is a treatment option causing little additional treatment in the majority of cases.

Characteristics and Caries Experience of Tetracycline-Affected Dentitions

1973 ◽  
Vol 52 (3) ◽  
pp. 508-516 ◽  
Author(s):  
Louise J. Brearley ◽  
J. Rennie Porteous
Keyword(s):  
Additive Effect ◽  
Caries Experience ◽  
Paired Control ◽  
Permanent Molars ◽  
Deciduous Molars ◽  
First Permanent Molars

A study of the caries experience of children with tetracycline-affected, but not hypoplastic, dentitions showed significantly lower DMF surface scores for the complete dentition, deciduous molars, and first permanent molars in comparison with paired control dentitions. Tetracycline and fluoride appeared to have an additive effect in lowering caries experience.

scholarly journals Hipomineralización incisivo molar y factores etiológicos ambientales. Revisión de la literatura

2019 ◽  
Vol 7 (1) ◽  
pp. 140-147
Author(s):  
María Solís-Espinoza ◽  
Catherine Sharlot Alarcón-Calle
Keyword(s):  
Dental Enamel ◽  
Molar Incisor Hypomineralisation ◽  
Enamel Defects ◽  
Palabras Clave ◽  
Incisor Hypomineralisation

La etiología de la hipomineralización incisivo-molar (HIM) aún no está totalmente definida, por lo que el objetivo del presente artículo fue hacer una revisión de la literatura de los posibles factores etiológicos asociados. Se realizó una búsqueda inicial en las bases de datos Elsevier, EBSCO, PubMed y Medline usando las siguientes palabras clave: molar incisor hypomineralisation, hypoplasia, dental enamel defects epidemiology, etiology. Se incluyeron artículos en inglés y español, estudios epidemiológicos de casos y controles de HIM, descripción del método de diagnóstico y registro, y descripción del factor asociado, publicados entre 1987 y 2018. Tomando en consideración 40 artículos que cumplían con los criterios de búsqueda. Se dividieron los factores etiológicos encontrados en tres etapas: prenatal, perinatal y posnatal. La causa exacta aún no está del todo definida, pero con base en los estudios tenemos indicios que nos podrían ayudar a prevenir este tipo de defectos. Sin embargo, son necesarios más estudios longitudinales para poder determinar la etiología exacta de esta alteración en la formación dental, mientras tanto los médicos pediatras y odontopediatras deben estar conscientes que el manejo temprano y adecuado de estas del HIM es importante.

scholarly journals Dental arch response to Haas-type rapid maxillary expansion anchored to deciduous vs permanent molars: A multicentric randomized controlled trial

2014 ◽  
Vol 85 (4) ◽  
pp. 570-576 ◽  
Author(s):  
Alessandro Ugolini ◽  
Carmen Cerruto ◽  
Luca Di Vece ◽  
Luis Huanca Ghislanzoni ◽  
Chiarella Sforza ◽  
...  
Keyword(s):  
Controlled Trial ◽  
Rapid Maxillary Expansion ◽  
Dental Arch ◽  
Maxillary Expansion ◽  
Posterior Crossbite ◽  
Permanent Molar ◽  
Permanent Molars ◽  
Deciduous Molars ◽  
First Permanent Molars ◽  
Intercanine Distance

ABSTRACT Objective:  To assess maxilla and mandibular arch widths' response to Haas-type rapid maxillary expansion (RME) anchored to deciduous vs permanent molars on children with unilateral posterior crossbite. Materials and Methods:  Seventy patients with unilateral posterior crossbite recruited at the Universities of Genova, Siena, and Insubria (Varese) were randomly located into GrE (RME on second deciduous molars) or Gr6 (RME on first permanent molars) and compared. Results:  Upper intermolar distance and permanent molar angulation increased significantly in Gr6 vs GrE at T1. Upper intercanine distance increased significantly in GrE vs Gr6 at T1 and T2. GrE showed significant increases for upper intermolar and upper intercanine widths. Gr6 showed statistically significant increases for upper intermolar widths, for upper and lower intercanine widths, and for increases of angulation of upper and lower permanent molars. Conclusions:  GrE showed reduced molar angulation increases at T1 and reduced molar angulation decreases at T2 when compared with Gr6. At T2, the net increase of the upper intercanine distance in GrE was still significant compared with Gr6, indicating a more stable expansion in the anterior area.

scholarly journals Aesthetic Rehabilitation of Molar Incisor Hypomineralisation Using Three Minimally Invasive Treatment Modalities – A Case Report

2020 ◽  
Author(s):  
Chahita Mahesh Lalchandani ◽  
Sandeep Tandon ◽  
Tripti Sharma Rai ◽  
Rinku Mathur ◽  
Anupama Kajal
Keyword(s):  
Case Report ◽  
Minimally Invasive ◽  
Treatment Modalities ◽  
Molar Incisor Hypomineralisation ◽  
Invasive Treatment ◽  
Resin Infiltration ◽  
Current Trends ◽  
Anterior Teeth ◽  
Permanent Molars ◽  
Incisor Hypomineralisation

Brief Background Molar incisor hypomineralisation (MIH) is a common developmental condition resulting in enamel defects in first permanent molars and permanent incisors. Aesthetic treatment of patients suffering from MIH is essential to enhance their self-esteem and promote their psychological development. Current trends for treating the condition have been increasingly shifting towards minimally invasive approaches, especially considering the age of patients. The decision regarding which treatment modality to undertake for the same is complex and depends on several factors, such as the degree of severity of the enamel defect, the patient’s age, social level and expectations. Pertaining to that, the aim of this case report is to present three different aesthetic and conservative treatment approaches to anterior teeth affected by molar incisor hypomineralisation. Key Words Molar incisor hypomineralisation, aesthetic rehabilitation, minimally invasive, resin infiltration, cpp-acp.

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