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1.
J Clin Periodontol ; 50(12): 1590-1600, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-37653705

RESUMO

AIM: Oligodontia (OD) is a rare developmental condition characterized by the absence of six or more teeth. Dental implant placement may be challenging due to anatomical factors. This study aims to evaluate the alveolar bone dimensions in OD patients compared with controls. MATERIALS AND METHODS: On maxillary and mandibular cone-beam computed tomography (CBCT), bone height and width were measured at every tooth and edentulous site. The distance to the inferior alveolar nerve was also measured. Fifty-three OD patients (40 maxillary and 32 mandibular CBCT) and 82 controls (51 maxillary and 31 mandibular CBCT) were compared using mixed models. RESULTS: Compared with those in OD patients, maxillary permanent teeth and edentulous sites showed significantly higher mean height in control patients (incisive-canine site height: +2.12 mm; edentulous incisive-canine site height: +4.46 mm [p > .001]). For the mandibular permanent teeth, mean height was higher in controls than in OD patients at the incisive-canine (+3.82 mm [p > .001]) and premolar areas (+2.06 mm [p > .001]). Only edentulous incisive-canine sites were significantly different between controls and OD patients (mean: +0.52 mm [p > .001]). Changes in alveolar nerve position were observed in case of molar agenesis. CONCLUSION: Maxillary and mandibular bone dimensions are reduced in OD patients compared with controls both in sites with permanent teeth and in edentulous areas.


Assuntos
Boca Edêntula , Tomografia Computadorizada de Feixe Cônico Espiral , Humanos , Estudos Retrospectivos , Mandíbula/diagnóstico por imagem , Tomografia Computadorizada de Feixe Cônico/métodos , Maxila/diagnóstico por imagem
2.
J Prosthet Dent ; 2023 Sep 05.
Artigo em Inglês | MEDLINE | ID: mdl-37679238

RESUMO

STATEMENT OF PROBLEM: Cleft lip and palate are the most frequent congenital anomalies of the face and are often linked with lateral incisor agenesis. The therapeutic decision on whether and how to replace the lateral incisors is not straightforward, and a decision-making tree is needed. PURPOSE: The purpose of this systematic review was to evaluate the available literature reporting on treatments for the replacement of missing lateral incisors in cleft areas. By analyzing the success and survival rates of these treatments, a decision-making tree was developed. MATERIAL AND METHODS: The literature search was performed on the PubMed (MEDLINE), Web of Science, Cochrane, EMBASE, Dentistry of Oral and Science Source, and Google Scholar databases and was based on the question: Which treatment for patients with lateral incisor agenesis and cleft lip and palate has a good success rate? RESULTS: Twenty-six articles were included in this systematic review. A meta-analysis was performed on 14 articles (20 case series, 6 case controls). The estimated overall 5-year survival rates were 96.4% for implant-supported prostheses. CONCLUSIONS: Different treatment options are available, depending on the clinical situation. If the patient meets the conditions for implant placement, this treatment remains a preferred solution. If the prosthetic space is reduced, orthodontic space closure and composite resin restorations are possible. When these options are not possible, a resin-bonded fixed partial denture is the preferred option. If the teeth adjacent to the edentulous area require extensive restorations, a fixed partial denture may be a suitable alternative.

3.
Clin Case Rep ; 10(3): e05507, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35261773

RESUMO

Peg-shaped maxillary lateral incisors cause many functional and esthetic major consequences in affected patients. Their esthetic and functional rehabilitations are often multidisciplinary, involving different clinical procedures like periodontal, orthodontic, or prosthodontic procedures. No exhaustive protocol has been established to improve their comprehensive management by general dentists or specialists. The aim of this article is to elaborate a simplified clinical protocol of complete management of peg-shaped maxillary lateral incisors by a multidisciplinary team (general practitioners, orthodontists, and prosthodontists). A clinical case of two peg-shaped maxillary lateral incisors completely rehabilitated with multidisciplinary approaches including orthodontic treatment and restoration by veneers and direct composite resin, according to the established protocol. Extraoral, intraoral, and smile clinical analysis are crucial to ensure optimal rehabilitation. Treatment results previsualization via wax-up and/or mock-up play a key role in the communication between practitioner and patient to help the latter make decision. These options also facilitate the achievement of a multidisciplinary approach by accurately estimating the number of dental movements and the type of restorations that are most suitable to the presenting clinical situation.

4.
J Stomatol Oral Maxillofac Surg ; 123(3): e57-e61, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-34274499

RESUMO

OBJECTIVES: Nevoid Basal Cell Carcinoma Syndrome (NBCS) is a rare genetic condition affecting multiple organs including the maxillofacial and dental region. The surgical removal of the odontogenic keratocystic tumors (OKT), the high rate of recurrence leads to a iatrogenic tooth loss requiring dental care. The aim of this study is therefore to describe the dental and orthodontic management, and to assess the impact of surgery on facial growth and oral development. METHODS: A retrospective study including 14 patients with GGS, followed at the Necker Enfants Malades Hospital. The study was carried out on the medical files and photographic records RESULTS: Patients developed on average 5.5 OKT (range: 1 to 11) and 1.7 recurrences (range:0 to 9) during the follow-up. The mean age at diagnosis of first OKT was 11.23 years (range: 6.75 to 16). KOTs were more frequently localized at the mandibular (30.9%) and maxillary molar level (25.1%). Forty-seven impacted teeth were extracted during the OKT removal. Eight patients out of 12 presented a class III skeletal relationship. The remaining ones had a skeletal class II associated with a hyperdivergent typology. Almost all patients had dental impactions with ectopic positions of the succedaneums tooth. At the inter-arch level, all patients needed orthodontic care, 3 patients did not begin their orthodontics. Orthodontic treatments began with an orthopedic phase followed by braces for the majority in 8 patients. Two patients had to undergo orthognathic surgery. Impacted teeth were treated by traction or extraction with further rehabilitation. CONCLUSION: The objective is not to simply compensate the iatrogenic hypodontia generated by the surgical procedure but to take into consideration the maxillofacial phenotype, skeletal characteristics and numerous intra- and inter-arch dental anomalies for a healthy oral management.


Assuntos
Síndrome do Nevo Basocelular , Tumores Odontogênicos , Dente Impactado , Síndrome do Nevo Basocelular/complicações , Síndrome do Nevo Basocelular/diagnóstico , Síndrome do Nevo Basocelular/epidemiologia , Seguimentos , Humanos , Doença Iatrogênica , Tumores Odontogênicos/complicações , Tumores Odontogênicos/diagnóstico , Tumores Odontogênicos/cirurgia , Estudos Retrospectivos
5.
Sleep Med ; 58: 123-129, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-31146124

RESUMO

BACKGROUND: Sleep-disordered breathing (SDB), including obstructive sleep apnea syndrome, is often underestimated because it requires a burdensome test (ie, polysomnography) to ensure diagnosis. To improve polysomnography referral, it is of utmost importance to validate efficient alternative screening tools. This study aimed to provide a translation and a cross-cultural validation of the Pediatric Sleep Questionnaire (PSQ) into French to obtain an easy-to-use and reliable screening tool. The psychometric properties of the French version were also determined. METHODS: The process of cross-cultural adaptation was carried out following these steps: forward-backward translation, evaluation by an expert committee, and pretesting of the pre-final version. Reliability of the French-PSQ version was assessed by Cronbach's alpha coefficients and Spearman's correlation on a convenient sample of 201 children (aged between 2 and 17 years). Construct validity was determined by factor analysis of principal components. RESULTS: Internal consistency was within an adequate range for all subscales: 0.711 for snoring, 0.559 for sleepiness, 0.682 for behavioral problems, and 0.776 for the whole questionnaire. Spearman's correlation analysis comparing questionnaires administered two weeks apart showed good correlation coefficients for all subscales (snoring: 0.642, sleepiness: 0.846, behavioral problems: 0.780, and entire SRBD scale: 0.835). Factor analysis performed to assess the structure of the French-SRBD scale confirmed the same four factors described in the original questionnaire ("breathing," "behavior," "sleepiness," and "other"). CONCLUSION: The French version of the PSQ has been successfully cross-culturally adapted and showed good psychometric properties, suggesting that it is useful as a tool to screen sleep-disordered breathing in French-speaking children.


Assuntos
Síndromes da Apneia do Sono/diagnóstico , Síndromes da Apneia do Sono/fisiopatologia , Apneia Obstrutiva do Sono/diagnóstico , Apneia Obstrutiva do Sono/fisiopatologia , Adolescente , Criança , Pré-Escolar , Comparação Transcultural , Estudos Transversais , Análise Fatorial , Feminino , França/epidemiologia , Humanos , Masculino , Polissonografia/métodos , Prevalência , Comportamento Problema/psicologia , Psicometria/instrumentação , Reprodutibilidade dos Testes , Respiração , Síndromes da Apneia do Sono/epidemiologia , Apneia Obstrutiva do Sono/epidemiologia , Sonolência , Ronco/epidemiologia , Inquéritos e Questionários , Tradução
6.
Orthod Fr ; 90(3-4): 321-335, 2019 12 01.
Artigo em Francês | MEDLINE | ID: mdl-34643519

RESUMO

Through his/her knowledge of cranio-facial growth, the orthodontist plays a leading role within the multidisciplinary team that tracks and treats sleep-disordered breathing (SDB) in children. Correction of craniofacial risk factors (maxillary deficiency and retrognathia) is commonly used by practitioners alongside orthodontic treatment such as OMA and RME in the optimal conditions afforded by childhood growth. Myofunctional therapies are performed to restore correct stomatognathic function and play a central role in the management of SDB in children. The orthodontist is therefore a key player in the medical treatment chain of these children.

7.
J Craniomaxillofac Surg ; 43(6): 950-5, 2015 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-26004807

RESUMO

Primary alveolar cleft repair has two main purposes: to restore normal morphology and normal function. Gingivoperiosteoplasty with bone grafting in mixed dentition has been a well-established procedure. We hypothesized that 1) performance of this surgery in deciduous dentition would provide favorable bone graft osseointegration, and 2) would improve the support of incisor teeth eruption, thereby avoiding maxillary growth disturbances. We conducted a retrospective study of clinical and tridimensional radiological data for 73 patients with alveolar clefts (with or without lip and palate clefts) who underwent gingivoperiosteoplasty with iliac bone graft in deciduous dentition. Pre- and post-operative Cone Beam Computed Tomography (CBCT) comparison allowed evaluation of the ratio between bone graft volume and initial cleft volume (BGV/ICV ratio), and measurement of central incisor teeth movements. This series of 73 patients included 44 males and 29 females, with a mean age of 5.5 years. Few complications were observed. Post-operative CBCT was performed at 7.4 months. The mean BGV/ICV ratio was 0.62. Axial rotation was significantly improved post-operatively (p = 0.004). Gingivoperiosteoplasty with iliac bone graft is safe when performed in deciduous dentition and results in a sufficient bone graft volume to support lateral incisor eruption and upper central incisor tooth position improvement.


Assuntos
Enxerto de Osso Alveolar/métodos , Transplante Ósseo/métodos , Tomografia Computadorizada de Feixe Cônico/métodos , Gengivoplastia/métodos , Periósteo/cirurgia , Autoenxertos/transplante , Pré-Escolar , Fenda Labial/cirurgia , Fissura Palatina/cirurgia , Dente Canino/anatomia & histologia , Feminino , Seguimentos , Humanos , Ílio/cirurgia , Processamento de Imagem Assistida por Computador/métodos , Imageamento Tridimensional/métodos , Incisivo/fisiologia , Masculino , Tamanho do Órgão , Técnica de Expansão Palatina , Periósteo/diagnóstico por imagem , Estudos Retrospectivos , Erupção Dentária/fisiologia , Dente Decíduo , Sítio Doador de Transplante/cirurgia , Resultado do Tratamento
8.
Orthod Fr ; 78(1): 39-48, 2007 Mar.
Artigo em Francês | MEDLINE | ID: mdl-17571531

RESUMO

Many genes that interact in a complex and interdependent manner participate in the development of the craniofacial complex. One of them, the Msxl homeobox gene, a transcription factor, is expressed from early developmental stages to adulthood in accordance with specific spatio-temporal patterns. When it is suppressed, transgenic mice exhibit craniofacial abnormalities that demonstrate what is its function in normal growth, just as it has been shown that certain Msxl mutations in humans are commonly associated with tooth agenesis.


Assuntos
Fator de Transcrição MSX1/genética , Desenvolvimento Maxilofacial/genética , Animais , Desenvolvimento Embrionário/genética , Ossos Faciais/embriologia , Regulação da Expressão Gênica/genética , Regulação da Expressão Gênica no Desenvolvimento/genética , Humanos , Fator de Transcrição MSX1/fisiologia , Camundongos , Camundongos Transgênicos , Mutação/genética , Transcrição Gênica/genética
9.
Nucleic Acids Res ; 33(16): 5208-18, 2005.
Artigo em Inglês | MEDLINE | ID: mdl-16157866

RESUMO

Bidirectional transcription, leading to the expression of an antisense (AS) RNA partially complementary to the protein coding sense (S) RNA, is an emerging subject in mammals and has been associated with various processes such as RNA interference, imprinting and transcription inhibition. Homeobox genes do not escape this bidirectional transcription, raising the possibility that such AS transcription occurs during embryonic development and may be involved in the complexity of regulation of homeobox gene expression. According to the importance of the Msx1 homeobox gene function in craniofacial development, especially in tooth development, the expression and regulation of its recently identified AS transcripts were investigated in vivo in mouse from E9.5 embryo to newborn, and compared with the S transcript and the encoded protein expression pattern and regulation. The spatial and temporal expression patterns of S, AS transcripts and protein are consistent with a role of AS RNA in the regulation of Msx1 expression in timely controlled developmental sites. Epithelial-mesenchymal interactions were shown to control the spatial organization of S and also AS RNA expression during early patterning of incisors and molars in the odontogenic mesenchyme. To conclude, this study clearly identifies the Msx1 AS RNA involvement during tooth development and evidences a new degree of complexity in craniofacial developmental biology: the implication of endogenous AS RNAs.


Assuntos
Regulação da Expressão Gênica no Desenvolvimento , Proteínas de Homeodomínio/genética , RNA Antissenso/biossíntese , Dente/embriologia , Fatores de Transcrição/genética , Animais , Embrião de Mamíferos/metabolismo , Extremidades/embriologia , Fator 8 de Crescimento de Fibroblasto , Fatores de Crescimento de Fibroblastos/farmacologia , Proteínas de Homeodomínio/biossíntese , Proteínas de Homeodomínio/metabolismo , Incisivo/embriologia , Incisivo/metabolismo , Fator de Transcrição MSX1 , Mandíbula/efeitos dos fármacos , Mandíbula/embriologia , Mandíbula/metabolismo , Camundongos , Dente Molar/embriologia , Dente Molar/metabolismo , RNA Antissenso/fisiologia , RNA Mensageiro/biossíntese , Fatores de Transcrição/biossíntese , Fatores de Transcrição/metabolismo
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