Preformed Metal Crowns for the Permanent Dentition

2015 ◽  
Vol 4 (4) ◽  
pp. 44-45 ◽  
Author(s):  
Lynsey M Millar ◽  
Alison M Cairns ◽  
Lauren Fowler

Preformed metal crowns have a range of uses in paediatric dentistry in both the primary and permanent dentition. This article provides an overview of their use in permanent teeth, including teeth that have been affected by molar incisor hypomineralisation, caries, developmental defects and tooth surface loss. The indications for use are described, along with the clinical technique for placement.

Author(s):  
C. Somani ◽  
G. D. Taylor ◽  
E. Garot ◽  
P. Rouas ◽  
N. A. Lygidakis ◽  
...  

Abstract Purpose To systematically review the treatment modalities for molar-incisor hypomineralisation for children under the age of 18 years. The research question was, ‘What are the treatment options for teeth in children affected by molar incisor hypomineralisation?’ Methods An electronic search of the following electronic databases was completed MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, LILACS, Google Scholar and Open Grey identifying studies from 1980 to 2020. The PRISMA guidelines were followed. The studies were screened, data extracted and calibration was completed by two independent reviewers. Results Of 6220 potential articles, 34 studies were included. Twenty studies investigated management of molars with fissure sealants, glass ionomer cement, polyacid modified resin composite, composite resin, amalgam, preformed metal crowns, laboratory-manufactured crowns and extractions. In four articles management of incisors with microabrasion, resin-infiltration and a combination of approaches was reported. Eight studies looked at strategies to mineralise MIH-affected teeth and/or reduce hypersensitivity. Two studies investigated patient-centred outcomes following treatment. Due to the heterogeneity between the studies, meta-analysis was not performed. Conclusion The use of resin-based fissure sealants, preformed metal crowns, direct composite resin restorations and laboratory-made restorations can be recommended for MIH-affected molars. There is insufficient evidence to support specific approaches for the management of affected incisors. Products containing CPP-ACP may be beneficial for MIH-affected teeth.


2019 ◽  
Vol 24 (1) ◽  
Author(s):  
Sylwia Kuderewska ◽  
Monika Stawiecka ◽  
Renata Milewska ◽  
Anna Kuźmiuk ◽  
Ewa Chorzewska

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.


2020 ◽  
Vol 54 (4) ◽  
pp. 420-430
Author(s):  
Amra Arslanagić ◽  
Nina Marković ◽  
Elmedin Bajrić ◽  
Lejla Burnazović Ristić

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.


2015 ◽  
Vol 12 (1) ◽  
pp. 38-42 ◽  
Author(s):  
R Shrestha ◽  
S Upadhaya ◽  
M Bajracharya

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


2019 ◽  
Vol 54 (1) ◽  
pp. 87-95
Author(s):  
Claudia Flexeder ◽  
Lamiaa Kabary Hassan ◽  
Marie Standl ◽  
Holger Schulz ◽  
Jan Kühnisch

This epidemiological study aimed to compare the caries and molar incisor hypomineralisation (MIH) experience in asthmatic and non-asthmatic adolescents assessed at 10 and 15 years of age. 730 adolescents from ongoing birth cohort studies (GINIplus/LISA) from Munich, Germany, were examined for carious lesions at the age of 10 and 15 years to determine caries experience under inclusion of non-cavitated carious lesions D1–2T and the tooth-related decay-missing-filled index. Furthermore, MIH was scored on all permanent teeth according to the criteria of the European Academy of Paediatric Dentistry. The association between caries and MIH prevalence at the 10-year and 15-year follow-up as well as caries incidence with ever having an asthma diagnosis was analysed using hurdle regression models adjusted for potential confounders. Of the 730 adolescents, 52 and 78 were identified as asthmatics at the 10- and 15-year follow-up, respectively. There were no significant differences in caries prevalence or experience between asthma-free participants and any of the asthma groups (taking metered-dose inhaler (MDI) medication vs. taking no MDI medication). However, a significant positive association was found for asthmatic adolescents who did not take MDI medication with higher MIH/T values (OR = 2.56, 95% CI = 1.03–6.37, p = 0.043) compared to non-asthmatics. In conclusion, asthma did not influence the caries status of adolescents in the present study. Interestingly, a significant association was found between adolescents with asthma who did not take MDI medication and the number of MIH-affected teeth. The association between asthma, medication, and MIH needs further confirmation.


Author(s):  
R. T. Kamilova ◽  
J. A. Kamilov

Relevance. Characteristics of eruption of secondary teeth is of diagnostic and prognostic interest, is the basis for implementation of targeted therapeutic and preventive measures among children. No research has ever been carried out in Uzbekistan to study an age and gender regional features of secondary teeth eruption. The aim is to determine the timing and symmetry of secondary teeth eruption in children of the city of Tashkent of the Republic of Uzbekistan and comparative assessment with the children of different cities of Russia.Materials and methods. 3,834 children between 3 and 17 years were conducted dental examination. A comparative analysis was made of the initial, intermediate and final periods of eruption of secondary teeth for children of Uzbekistan (Tashkent city) and Russia (Saratov, Izhevsk and Sergach).Results. In Tashkent children of both gender, in most cases, lower teeth were erupted before than their antagonists. In girls, teeth were erupted earlier than their male counterparts. At the initial stage of eruption, asymmetry was more pronounced in boys than in girls, while in the middle and final stages it was more pronounced in the opposite direction. Observed asymmetry of antimere’s teeth were indicated left-handed permanent dentition in boys and right-handed in girls. Children of Tashkent city were observed permanent dentition in one group of teeth 1-16 months earlier, and in others – 1-24 months later than their peers in Russian cities. Revealed differences were more pronounced among boys than among girls. Children in Tashkent differed more from their peers in Sergach and less from those in Izhevsk. Conclusions. Regional peculiarities of permanent dentition in children of Tashkent city and revealed expressed differences with indicators of Russian children are the basis for development of separate age and  gender normative assessment permanent dentition tables for children of Uzbekistan. 


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