Cost-effectiveness of restorative treatments for permanent molars with severe molar incisor hypomineralization: perspectives for the Brazilian public health system.

OBJECTIVES: To undertake a cost-effectiveness analysis of restorative treatments for a first permanent molar with severe molar incisor hypomineralization from the perspective of the Brazilian public system. MATERIALS AND METHODS: Two models were constructed: a one-year decision tree and a ten-year Markov model, each based on a hypothetical cohort of one thousand individuals through Monte Carlo simulation. Eight restorative strategies were evaluated: high viscosity glass ionomer cement (HVGIC); encapsulated GIC; etch and rinse adhesive + composite; self-etch adhesive + composite; preformed stainless steel crown; HVGIC + etch and rinse adhesive + composite; HVGIC + self-etch adhesive + composite, and encapsulated GIC + etch and rinse adhesive + composite. Effectiveness data were sourced from the literature. Micro-costing was applied using 2022 USD market averages with a 5% variation. Incremental cost-effectiveness ratio (ICER), net monetary benefit (%NMB), and the budgetary impact were obtained. RESULTS: Cost-effective treatments included HVGIC (%NMB = 0%/ 0%), encapsulated GIC (%NMB = 19.4%/ 19.7%), and encapsulated GIC + etch and rinse adhesive + composite (%NMB = 23.4%/ 24.5%) at 1 year and 10 years, respectively. The benefit gain of encapsulated GIC + etch and rinse adhesive + composite in relation to encapsulated GIC was small when compared to the cost increase at 1 year (gain of 3.28% and increase of USD 24.26) and 10 years (gain of 4% and increase of USD 15.54). CONCLUSION: Within the horizon and perspective analyzed, the most cost-effective treatment was encapsulated GIC restoration. CLINICAL RELEVANCE: This study can provide information for decision-making.

Association between molar hypomineralization, genes involved in enamel development, and medication in early childhood: A preliminary study.

BACKGROUND: Molar hypomineralization (MH) is defined as a multifactorial condition, and thus, its presence may be defined by interactions between environmental and genetic factors. AIM: To evaluate the association between MH, genes involved in enamel development, and the use of medication during pregnancy in early childhood. DESIGN: One hundred and eighteen children, 54 with and 64 without MH, were studied. The data collected included demographics, socioeconomic data, and the medical history of mothers and children. Genomic DNA was collected from saliva. Genetic polymorphisms in ameloblastin (AMBN; rs4694075), enamelin (ENAM; rs3796704, rs7664896), and kallikrein (KLK4; rs2235091) were evaluated. These genes were analyzed by real-time polymerase chain reaction using TaqMan chemistry. The software PLINK was used to compare allele and genotype distributions of the groups and to assess the interaction between environmental variables and genotypes (p < .05). RESULTS: The variant allele KLK4 rs2235091 was associated with MH in some children (odds ratio [OR]: 3.75; 95% confidence interval [CI] = 1.65-7.81; p = .001). Taking medications in the first 4 years of life was also associated with MH (OR: 2.94; 95% CI = 1.02-6.04; p = .041) and specifically in association with polymorphisms in ENAM, AMBN, and KLK4 (p < .05). The use of medications during pregnancy was not associated with MH (OR: 1.37; 95% CI = 0.593-3.18; p = .458). CONCLUSION: The results of this study suggest that taking medication in the postnatal period appears to contribute to the etiology of MH in some evaluated children. There may be a possible genetic influence of polymorphisms in the KLK4 gene with this condition.

Pasta CTZ para abordaje endodóncico de dientes primarios: Una revisión narrativa de la literatura / Pasta CTZ na abordagem endodôntica de dentes decíduos: uma revisão de literatura / CTZ paste for endodontic approach to deciduous teeth: A literature review

Introducción:La afectación pulpar irreversible de los dientes primarios representa un desafío para la endodoncia en odontopediatría. Sobre la base del enfoque de esterilización de lesiones y reparación de tejidos (LSTR- Lesion Sterelization and Tissue Repair), se ha propuesto una técnica endodóncica no instrumental que utiliza pastas antibióticas. La pasta antibiótica CTZ, que contiene una mezcla de cloranfenicol, tetraciclina, óxido de zinc y eugenol, tiene potencial para uso en la técnica endodóncica no instrumental en pacientes pediátricos. Objetivo: El objetivo de este trabajo es presentar una revisión narrativa de la literatura sobre la pasta antibiótica CTZ, en lo relacionado a capacidad antimicrobiana, biocompatibilidad y aspectos clínicos. Materiales y métodos: Se realizaron búsquedas en las bases de datos PUBMED, BVS, WEB OF SCIENCE, COCHRANE y SCOPUS utilizando los términos "ctz paste", "ctz", "tooth, deciduous" y "primary molars" sin restricción de idioma, con fecha limitada de 2015 hasta enero de 2021. Resultados: Después de eliminar los duplicados, se obtuvieron 13 artículos. La pasta CTZ mostró una actividad antimicrobiana satisfactoria en Enterecoccus faecalis, Staphylococcus aureus, Klebisiella pneumonia, Escherichia coli y Candida albicans. Los estudios in vitro e in vivo han demostrado que la pasta tiene biocompatibilidad. La frecuencia de éxito clínico varió del 37% al 100% y el éxito radiográfico del 29,7% al 97,4%. Conclusiones: Aunque se necesitan más estudios que contribuyan a un mejor nivel de la evidencia, puede afirmase que la pasta CTZ una es alternativa para los casos de afectación pulpar en dientes primarios, inclusive en el ámbito de la salud pública

Introdução: O envolvimento pulpar irreversível dos dentes decíduos, representa um desafio à endodontia em odontopediatria. Com base na abordagem de esterilização da lesão e reparo tecidual (LSTR- Lesion Sterelization and Tissue Repair), a técnica endodôntica não instrumental com utilização de pastas antibióticas tem sido proposta. A pasta antibiótica CTZ, que contém uma mistura de cloranfenicol, tetraciclina, óxido de zinco e eugenol, apresenta potencial para uso na técnica endodôntica não instrumental em pacientes pediátricos. Objetivo: O objetivo deste trabalho é apresentar uma revisão narrativa da literatura sobre a pasta antibiótica CTZ, abrangendo capacidade antimicrobiana, biocompatibilidade e aspectos clínicos. Materiais e métodos: Foi realizada busca nas bases de dados PUBMED, BVS, WEB OF SCIENCE, COCHRANE e SCOPUS usando os termos "ctz paste", "ctz", "tooth, deciduous" e "primary molars" com data limitada de 2015 a janeiro de 2021. Resultados: Após a remoção de duplicatas 13 artigos foram obtidos. A pasta CTZ mostrou atividade antimicrobiana satisfatória sobre Enterecoccus faecalis, Staphylococcus aureus, Klebisiella pneumonia, Escherichia coli y Candida albicans. Estudos in vitro e in vivo demonstraram que a pasta apresenta boa biocompatibilidade. A frequência de sucesso clínico variou de 37% a 100% e o sucesso radiográfico de 29,7% a 97,4%. Conclusão: Embora mais estudos que contribuam para um melhor nível de evidência sejam necessários, a pasta antibiótica CTZ apresenta atividade antimicrobiana, biocompatibilidade e resultados clínicos satisfatórios, podendo ser uma alternativa interessante para os casos de comprometimento pulpar de dentes decíduos, inclusive em saúde pública

Introduction: The irreversible pulp changes in primary teeth represent a challenge to endodontics in pediatric dentistry. Based on the Lesion Sterilization and Tissue Repair approach (LSTR), a non-instrumental endodontic treatment (NIET) of primary teeth root canals using an antibiotic paste has been proposed. The CTZ antibiotic paste, which contains a mixture of chloramphenicol, tetracycline, zinc oxide and eugenol, has potential for use in pediatric patients. Objective: The objective of this work is to present a literature review on the CTZ antibiotic paste, covering antimicrobial capacity, biocompatibility, and clinical aspects. Methods: An electronic search on PUBMED, BVS, WEB OF SCIENCE, COCHRANE y SCOPUS databases using the terms "ctz paste", "ctz", "deciduous teeth" and "primary molars" without language restrictions and publication date between 2015 and January 2021. Results: After removing duplicates, a total of 13 articles were included. The CTZ paste showed satisfactory antimicrobial activity on Enterecoccus faecalis, Staphylococcus aureus, Klebisiella pneumonia, Escherichia coli andCandida albicans. In vivo and in vitro studies have demonstrated that the paste presents good biocompatibility. The frequency of clinical success varied from 37% to 100% and radiographic success from 29,7% to 97,4%. Conclusion: Although more studies are needed to contribute to the body of evidence, the CTZ antibiotic paste demonstrated antimicrobial activity, biocompatibility and satisfactory clinical results and may be an alternative for cases of pulp involved primary teeth, including in public health.

Third molar agenesis as a potential marker for craniofacial deformities.

The identification of clinical patterns of tooth agenesis in individuals born with craniofacial deformities may be a useful tool for risk determination of these defects. We hypothesize that specific craniofacial deformities are associated with third molar agenesis. OBJECTIVE: The aim of this study was to identify if third molar agenesis could have a relation with other craniofacial structure alterations, such as cleft lip and palate, skeletal malocclusion, or specific growth patterns in humans. DESIGN: Data were obtained from 550 individuals ascertained as part of studies aiming to identify genetic contributions to oral clefts. 831 dental records of patients aged over eight years seeking orthodontic treatment were also included. SN-GoGn angle were used to classify the growth pattern (hypo-divergent, normal and hyper-divergent), and the ANB angle was used to verify the skeletal malocclusion pattern (Class I, II and III). Panoramic radiographs were used to determine third molar agenesis. RESULTS: A high frequency of third molar agenesis among individuals born with cleft lip with or without cleft palate (55%), as well as among their relatives (93.5%) was found. Third molar agenesis was not associated to skeletal malocclusion or growth pattern. CONCLUSION: It appears that third molar agenesis is associated with the disturbances that lead to cleft lip and palate.

Dental anomalies in different growth and skeletal malocclusion patterns.

OBJECTIVES: To evaluate prevalence, distribution, and sexual dimorphism of dental anomalies (DA) among different skeletal malocclusions (SM) and growth patterns (GP) under the hypothesis that specific clinical patterns exist and may indicate common etiological roots. MATERIALS AND METHODS: A total of 1047 orthodontic records of patients older than 8 years were evaluated. The SN-GoGn angle was used to classify GP (hypodivergent, normal, and hyperdivergent), and the ANB angle was used to verify SM (Angle Classes I, II, and III). These assessments were done from lateral cephalometric radiographs. DA were diagnosed using panoramic radiographs by one calibrated investigator. Odds ratios, chi-square, and Student's t-tests were used. RESULTS: Of the subjects, 56.7% were female, with mean age of 16.41 (±10.61) years. The prevalence of DA was 15.7%. Impaction and tooth agenesis were the most prevalent DA, with relative frequencies of 14.4% and 9.7%, respectively. DA were most prevalent in Class III SM (80.8%) and in hypodivergent GP (82.5%), although this was not statistically significant. Tooth agenesis ( P < .01) and microdontia ( P = .025) were significantly more common among hypodivergent GP and Class III SM, respectively. CONCLUSIONS: The results of this study support the idea that DA are preferentially associated with certain patterns of malocclusion.

Mesio-Distal and Buccal-Lingual Tooth Dimensions are Part of the Cleft Spectrum: A Pilot for Future Genetic Studies.

Objective : Considering that oral clefts and tooth dimensions may be part of the same phenotypic spectrum, the aim of this study was to investigate tooth dimensions in permanent dentition and dental malformations, including tooth size discrepancies, of subjects born with clefts compared with individuals without clefts. Design : Cross-sectional study. Participants : The cleft group was composed of 66 subjects, and the noncleft group consisted of 66 healthy unrelated subjects. Main Outcome Measures : The mesio-distal and buccal-lingual crown diameter of fully erupted permanent teeth outside the cleft area was measured using a digital caliber. Clinical records and radiographs were used to evaluate the type of clefts and dental anomalies. Results : The lower second premolar was significantly reduced in the CLP and CP groups. The upper lateral incisor was found to be significantly smaller in the CP group, only for mesio-distal dimensions (P < .05). Dental agenesis was found in eight (12%) cleft subjects and supernumerary teeth in two (3%). Conclusions : Subjects born with oral clefts presented size reduction in specific dental groups.

Image-based evaluation of facial fractures in a child using computed tomography.

This article describes the case of a boy who had a fracture of the mandibular parasymphysis region associated with a fracture of the contralateral condyle. Panoramic and computed tomography images were used to monitor bone remodeling.

Dental anomalies in children born with clefts: a case-control study.

OBJECTIVE: To determine the presence of specific patterns of dental defects in a group of individuals born with clefts. DESIGN: Case-control. SETTING: Nossa Senhora do Loreto Municipal Hospital and Federal University of Rio de Janeiro Pediatric Dentistry Clinics, Rio de Janeiro, Brazil. PATIENTS: 642 radiographic and clinical records were evaluated for 321 cases and 321 controls. RESULTS: Individuals born with clefts presented considerably more dental anomalies in comparison with controls (p  =  .0001). The most frequent was tooth agenesis (n  =  53; p  =  .001), followed by supernumerary teeth (n  =  14; p  =  .11) and tooth malposition (n  =  11; p  =  .33). Regarding tooth agenesis, the upper lateral incisors were more frequently absent in the cleft group (31/86), and control individuals presented more agenesis of the mandibular second premolars (19/45). CONCLUSIONS: The higher prevalence of dental anomalies, especially number anomalies, opposite the cleft area, in individuals born with cleft lip and/or palate is the most common associated dental anomaly outside the cleft area.

Developmental dental alterations in permanent teeth after intrusion of the predecessors: clinical and microscopic evaluation.

This case report describes the management of developmental dental alterations in permanent dentition as a consequence of severe intrusive luxation in its predecessors in a child of 2 years. At 10 years of age, this patient was referred for consultation due to lack of permanent maxillary right central and lateral incisors. Radiographic examination revealed impaction of hypoplasic permanent maxillary central incisor, absence of the lateral incisor and compound odontoma in region of the permanent maxillary lateral incisor. The odontoma was surgically removed and unerupted central incisor was placed in orthodontic traction over a period of 8 months. The central incisor presented with abnormal shape and was restored with composite resin. Odontoma histologic analysis was carried out through Hematoxylin and Eosin coloration and Scanning Electron Microscopy. Cement and osteocement formations were found in soft tissue, as well as some irregularly distributed dentine islands of tooth-like structures, indicative of compound odontoma. We followed up this patient for 5 years and orthodontic management was successfully performed for correct alignment of the maxillary right central incisor impacted by compound odontoma.

Assessing the proposed association between tooth agenesis and taurodontism in 975 paediatric subjects.

BACKGROUND: An association between tooth agenesis and taurodontism has been suggested. The identification of subpopulations with specific associated dental anomalies (subphenotype) would allow testing of the specific hypothesis that certain genetic factors contribute to the specific subphenotype. AIM: This work aims to assess a large cohort to verify if the association between tooth agenesis and taurodontism is present. DESIGN: Panoramic radiographs of 1002 patients were examined and 975 were used in this study. The presence of tooth agenesis and taurodontism was assessed in the study population. RESULTS: The frequency of tooth agenesis was 4.6% and the frequency of taurodontism was 1.6%. There were, however, no observations of concomitant tooth agenesis and taurodontism. CONCLUSIONS: Our data do not support the hypothesis that isolated tooth agenesis is associated with isolated taurodontism.