Orthognathic Hardware Complications in the Era of Patient-Specific Implants.

BACKGROUND: Patients undergoing orthognathic skeletal correction present with a variety of comorbidities that may affect surgical outcomes. The purpose of this study was to determine how patient risk factors and operative technique contribute to complication rates after orthognathic surgery in the era of patient-specific implants. METHODS: Retrospective cohort analysis was conducted of pediatric patients undergoing Le Fort I osteotomy, bilateral sagittal split osteotomy, and/or genioplasty from 2014 to 2018. Patient risk factors, operative characteristics, and postoperative outcomes were gathered and compared with appropriate statistics. RESULTS: Ninety-four patients met inclusion criteria, with an overall 1-year complication rate of 11.7 percent (11 of 94). Patient-specific mandibular plates are significantly associated with infection (p = 0.009; OR, 8.8), occurrence of any complication (p = 0.003; OR, 8.3), readmission (p < 0.001; OR, 11.1), and reoperation (p < 0.001; OR, 11.4). In patients with syndromes or history of cleft lip/palate, patient-specific mandibular plates are associated with infection (p = 0.006; OR, 10.3), readmission (p < 0.001; OR, 21.6), and reoperation (p < 0.001; OR, 22.9). In multivariate regression controlling for age, sex, syndrome status, and orofacial cleft history, use of patient-specific mandibular plates was associated with infection (p = 0.017; adjusted OR, 12.5), any complication (p = 0.007; adjusted OR, 11.8), readmission (p = 0.001; adjusted OR, 17.9), and reoperation (p = 0.001; adjusted OR, 18.9). CONCLUSIONS: In the era of patient-specific orthognathic surgery, syndromic status and use of patient-specific mandibular plates are associated with increased infection, readmission, and reoperation because of hardware-related complications. The authors' data support increased caution and counseling with use of patient-specific mandibular implants in patients with syndromic status, history of orofacial cleft, and history of previous maxillomandibular surgery given increased risk of hardware-related complications. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, III.

La relació de la micrognàtia transversal amb alguns factors de risc en infants mexicans / Micrognatismo transversal y su relación con algunos factores de riesgo en niños mexicanos / Risk factors of transversal micrognathiain mexican children

Fonament: La micrognàtia transversal (MT) és una alteració del creixement ossi i de la relació dental que impedeix el funcionament adequat de l'aparell masticatori. Objectiu: Avaluar si hi ha associació entre la freqüència d'MT amb la lactància materna de menys de sis mesos, la presència d'hàbits de succió digital, la respiració bucal i l'absència d'espais fisiològics. Mètode: Es va dur a terme un estudi transversal examinant 273 infants mexicans de cinc anys, de tots dos sexes. Abans de l'enquesta es va estandarditzar un cirurgià dentista (k=0,998). Per al tractament estadístic es van calcular freqüències i percentatges, i la prova de khi quadrat corregida de Yates. Resultats: La condició clínica més freqüent va ser l'absència d'espais fisiològics (62,3%); així mateix, l'MT va tenir una distribució variable per sexe, prò no significativa. Es va observar associació entre l'MT amb l'absència d'espais fisiològics, l'hàbit de respiració bucal, la lactància i la mossegada profunda (X 2 Y =10,311, p =0,0001; X 2 Y =7,290, p=0,0001; X 2 Y =21,374, p =0,0001; X2 Y =8,127, p =0,044, respectivament), però no amb la succió digital. Conclusions: Els resultats d'aquest estudi posen de manifest el paper rellevant del pediatre per recomanar a les mares que alletin els seus fills durant un període no menor a sis mesos, així com la responsabilitat d'identificar i eradicar les causes que provoquen que l'infant respiri per la boca, a més de fer la derivació a l'odontopediatre en el cas que ho consideri necessari, perquè elimini aquest hàbit, com a mesura de prevenció per al desenvolupament de maloclusions dentals

Fundamento: El micrognatismo transversal (MT) es una alteración del crecimiento óseo y de la relación dentaria que impiden el funcionamiento adecuado del aparato masticatorio. Objetivo: Evaluar si existe asociación entre la frecuencia de MT con la lactancia materna menor a seis meses, la presencia de hábitos de succión digital, la respiración bucal y la ausencia de espacios fisiológicos. Método: Se llevó a cabo un estudio transversal examinando a 273 niños mexicanos de cinco años, de ambos sexos. Previamente a la encuesta, se estandarizó a un cirujano dentista ( k =0,998). Para el tratamiento estadístico fueron calculados frecuencias y porcentajes, y la prueba de ji cuadrado corregida de Yates. Resultados: La condición clínica más frecuente fue la ausencia de espacios fisiológicos (62,3%); asimismo, el MT tuvo una distribución variable por sexo, pero no significativa. Se observó asociación entre el MT con la ausencia de espacios fisiológicos, el hábito de respiración bucal, la lactancia y la mordida profunda (X 2Y=10,311, p=0,0001; X2Y=7,290, p=0,0001; X2Y=21,374, p=0,0001; X2Y=8,127, p=0,044, respectivamente), pero no con la succión digital. Conclusiones: Los resultados del resente estudio ponen de manifiesto el papel relevante del pediatra para recomendar a las adres que amamanten a sus hijos durante un periodo no menor a seis meses, así omo la responsabilidad de identificar y erradicar las causas que provocan que el niño espire por la boca, además de su derivación al odontopediatra en el caso de que lo onsidere necesario, para que elimine este hábito como medida de preven-ción para el esarrollo de maloclusiones dentales

Background: Transversal micrognathia (TM) is an alteration of bone growth and the dental distribution that affects the adequate function of masticatory apparatus. Objective: To evaluate the association between the frequency of transversal micrognathia and breastfeeding less than six months, the presence of thumb sucking habits, oral breathing, and the absence of physiological spaces. Method: We conducted a transversal study including 273 five- years-old Mexican children of both sexes. Prior to the survey, we standardized the evaluation by a dental surgeon ( k=0.998). We calculated frequencies and percentages, and applied the chi-squa-red test with Yates correction. Results: The most frequent clinical condition found was the absence of physiological spaces (62.3%). TM had a variable but not significant sex distribution. We observed an association between TM and the absence of physiological spaces, oral breathing, breastfeeding, and deep biting (X2Y=10,311, p=0,0001; X2Y=7,290, p=0,0001; 2Y=21,374, p=0,0001; X2Y=8,127, p=0,044, respec-tively), but not with thumb sucking. Conclusions: Our results highlight the relevant role of the pediatrician in advising others that breastfeed their children for periods shorter than six months, as well as the esponsibility to identify and eradicate the factors that cause oral breathing and rompt evaluation by a pediatric dentist when required to prevent the de-velopment of dental malocclusion

Efectos del tratamiento temprano en variables morfológicas, cinco años después de su aplicación / Effects of early treatment on morphological variables five years after application

Introducción: las pautas del tratamiento temprano propician una respuesta de desarrollo del sistema estomatognático. Objetivo: evaluar los efectos del tratamiento temprano en variables morfológicas, con técnicas de la rehabilitación neuro oclusal, cinco años después de ser aplicado durante la dentición temporal. Métodos: investigación de desarrollo, longitudinal y descriptiva, entre los años 2001 y 2010, en la Facultad de Estomatología de la Universidad de Ciencias Médicas de Villa Clara. Universo: 2 215 niños de cinco años de edad perteneciente a instituciones infantiles de la ciudad de Santa Clara (2001-2002). Se utilizó un método estratificado por etapas. Las variables de estudio se analizaron en tres etapas evolutivas: inicial, intermedia y final. La muestra fue de 59 niños con interferencias oclusales durante la dentición temporal que fueron tratados con terapias funcionales, durante el año 2002 y evaluados un año después (primera etapa). La segunda etapa se desarrollo durante los años 2007-2010; la muestra fue de 46 niños con diez años de edad. Se diseñó un modelo de consentimiento informado que estableció el compromiso de colaboración de los niños seleccionados. Se realizaron pruebas estadísticas: test de Friedman, Wilcoxon, Fisher y medida clásica de chi cuadrado. Resultados: se observó un aumento del resalte en 33 de los casos y predominó el escalón mesial (87 por ciento) al final del estudio. Se mantuvo la tendencia al aumento en la anchura intermolar temporal. Los valores medios a nivel de los primeros molares permanentes se comportaron similares a la norma descrita por Mayoral (47 mm). Conclusiones: los cambios favorables observados en las variables morfológicas objeto de estudio, cinco años después de ser aplicado el tratamiento temprano con técnicas de la rehabilitación neuro oclusal, corroboran que los cinco primeros años de la vida del niño constituye la etapa ideal para comenzar a tratar las alteraciones del sistema estomatognático(AU)

Introduction: early treatment typically obtains an adequate developmental response from the stomatognathic system. Objective: evaluate the effects of early treatment on morphological variables using neuro-occlusal rehabilitation techniques five years after application during primary dentition. Methods: adevelopmental longitudinal descriptive study was conducted from 2001 to 2010 at the School of Dentistry of the University of Medical Sciences of Villa Clara. The study universe was 2 215 five-year-old children from educational institutions of the city of Santa Clara (2001-2002). A staged stratified method was applied. Study variables were analyzed along three evolution stages: initial, intermediate and final. The study sample was composed of 59 children with occlusal interferences during primary dentition, which were treated with functional therapies in 2002 and evaluated one year later (first stage). The second stage extended from 2007 to 2010. The sample consisted of 46 ten-year-old children. An informed consent form was developed to record the commitment of the children selected with the study. The statistical tests performed were Friedman's, Wilcoxon's, Fisher's and classical chi-square measure. Results: increased overjet was found in 33 of the cases, with a predominance of the mesial step (87 percent) at the end of the study. A tendency to increased temporary intermolar width was observed throughout the study. Mean values for the first permanent molars were similar to the standard described by Mayoral (47 mm). Conclusions: the favorable changes found in the morphological variables under study five years after application of early treatment with neuro-occlusal rehabilitation confirm that the first five years in the life of a child are the ideal stage to start treating alterations of the stomatognathic system(AU)

Efectos del tratamiento temprano en variables morfológicas, cinco años después de su aplicación / Effects of early treatment on morphological variables five years after application

Introducción: las pautas del tratamiento temprano propician una respuesta de desarrollo del sistema estomatognático.Objetivo: evaluar los efectos del tratamiento temprano en variables morfológicas, con técnicas de la rehabilitación neuro oclusal, cinco años después de ser aplicado durante la dentición temporal.Métodos: investigación de desarrollo, longitudinal y descriptiva, entre los años 2001 y 2010, en la Facultad de Estomatología de la Universidad de Ciencias Médicas de Villa Clara. Universo: 2 215 niños de cinco años de edad perteneciente a instituciones infantiles de la ciudad de Santa Clara (2001-2002). Se utilizó un método estratificado por etapas. Las variables de estudio se analizaron en tres etapas evolutivas: inicial, intermedia y final. La muestra fue de 59 niños con interferencias oclusales durante la dentición temporal que fueron tratados con terapias funcionales, durante el año 2002 y evaluados un año después (primera etapa). La segunda etapa se desarrollo durante los años 2007-2010; la muestra fue de 46 niños con diez años de edad. Se diseñó un modelo de consentimiento informado que estableció el compromiso de colaboración de los niños seleccionados. Se realizaron pruebas estadísticas: test de Friedman, Wilcoxon, Fisher y medida clásica de chi cuadrado.Resultados: se observó un aumento del resalte en 33 de los casos y predominó el escalón mesial (87 por ciento) al final del estudio. Se mantuvo la tendencia al aumento en la anchura intermolar temporal. Los valores medios a nivel de los primeros molares permanentes se comportaron similares a la norma descrita por Mayoral (47 mm).Conclusiones: los cambios favorables observados en las variables morfológicas objeto de estudio, cinco años después de ser aplicado el tratamiento temprano con técnicas de la rehabilitación neuro oclusal, corroboran que los cinco primeros años de la vida del niño constituye la etapa ideal para comenzar a tratar las alteraciones del sistema estomatognático(AU)

Introduction: early treatment typically obtains an adequate developmental response from the stomatognathic system.Objective: evaluate the effects of early treatment on morphological variables using neuro-occlusal rehabilitation techniques five years after application during primary dentition.Methods: adevelopmental longitudinal descriptive study was conducted from 2001 to 2010 at the School of Dentistry of the University of Medical Sciences of Villa Clara. The study universe was 2 215 five-year-old children from educational institutions of the city of Santa Clara (2001-2002). A staged stratified method was applied. Study variables were analyzed along three evolution stages: initial, intermediate and final. The study sample was composed of 59 children with occlusal interferences during primary dentition, which were treated with functional therapies in 2002 and evaluated one year later (first stage). The second stage extended from 2007 to 2010. The sample consisted of 46 ten-year-old children. An informed consent form was developed to record the commitment of the children selected with the study. The statistical tests performed were Friedman's, Wilcoxon's, Fisher's and classical chi-square measure.Results: increased overjet was found in 33 of the cases, with a predominance of the mesial step (87 percent) at the end of the study. A tendency to increased temporary intermolar width was observed throughout the study. Mean values for the first permanent molars were similar to the standard described by Mayoral (47 mm).Conclusions: the favorable changes found in the morphological variables under study five years after application of early treatment with neuro-occlusal rehabilitation confirm that the first five years in the life of a child are the ideal stage to start treating alterations of the stomatognathic system(AU)

Stomatognathic evaluation at five years of age in children born premature and at term.

BACKGROUND: The high frequency of alterations of the stomatognathic system associated with premature birth may suggest that prematurity is an important risk factor in the development of this system. Prematurity has an incidence between 6-11% of births and is associated with factors such as genetic, maternal conditions (obstetric problems, nutritional status, infections) and antenatal care. In addition, undesirable situations, such as changes in enamel and the development of the skeletal structure, also appears to be associated with prematurity. This study aimed to look for changes in the stomatognathic system at five years of age associated with premature birth. METHODS: We estimated the prevalence of developmental disorders of the stomatognathic system in the primary dentition of preschool children at five years of age. Changes in preterm infants (n = 32) compared with term born (n = 381) were evaluated . Clinical examinations and questionnaire with sociodemographic and health of mothers and children information. Gestational age, birth weight, head circumference, Apgar score and mechanical ventilation, were collected from the medical records to birth records. The explanatory variable was preterm (<37 weeks gestational age). RESULTS: Prevalence of 7.7% of preterm infants was found. Of these, 40.6% had atresic palate, 56.2% malocclusion and 21.8% enamel hypoplasia. Forty (9.6%) children were not breastfed at the breast, and 26 (65.0%) had some type of malocclusion, showing association between not breastfeeding with an abnormal development of the stomatognathic system. The group of preterm infants showed five times more changes in head circumference and three times more mechanical ventilation use at birth. Change in head circumference at birth and mechanical ventilation has a significant association between groups of preterm and term infants. CONCLUSIONS: Mechanical ventilation at birth directly contributed to an increased risk of developmental disorders of the stomatognathic system in preterm infants, especially dental hypoplasia. Non-breastfed children had a higher risk of developing malocclusion. Alterations in head circumference were related effective on dental malocclusion. The results suggest that changes in the stomatognathic system are influenced by premature birth and points to the imperative need of using methods of preventive.

[The suitability of orthodontical groups of indications (OGI) for preventive dental examinations of the public health service]. / Die Eignung der "Kieferorthopädischen Indikationsgruppen" (KIG) für die zahnärztliche Vorsorgeuntersuchung des Offentlichen Gesundheitsdienstes (OGD).

In the context of the dental preventive medical examinations of the public health service, the orthodontical data-gathering in children's day-care centre and schools, in contrast to the diagnoses of caries disease, was made was based so far on a non-uniform methodology. In order to provide in future, also in the orthodontical sector, data material that is usable for comparative national and local health reporting, a uniform methodology should form the basis for the data acquisition. The present study makes a contribution to this objective. A goal of the work was to test two different collection instruments for their suitability as objective tools in the context of the preventive dental medical examinations. The occurrence and the severity level of dentofacial anomalies as well as the orthodontic treatment status of Thuringian school children of defined age groups (9 to 11 years old, 12 to 13 years old) were recorded and the orthodontic treatment need was determined. In the younger age group valid the orthodontical groups of indications (OGI) were found for the first time in Germany; in the older group we tested the already long established Dental Aesthetic Index (DAI) and equipment application recommended by the World Health Organization (WHO). The work was a component of the task spectrum of the WHO Collaboration Centre "Prevention of Oral disease" of the Health Centre for Preventive Dentistry at the Centre for Tooth, Mouth and Jaw Dentistry of the Friedrich Schiller University of Jena in Thuringia. As investigation region, a rural area ("Landkreis Eichsfeld") of Thuringia was choosen. The study was arranged into a sociological and a clinical-epidemiological part. Altogether 1845 pupils were recruited from national schools. The questionnaire was based on the WHO-initiated "International Collaborative Study of Oral Health Outcomes" (ICS II study). The investigations took place in the context of the preventive medical examinations of the public health service. The results were based on the answers and findings of 691 probants of the group of the 9-11 years old (AG 1) and 774 probants of the group of the 12-13 years old (AG 2). The sociological results of both age groups reflected social restrictions regarding the presence of dentofacial anomalies in an order of magnitude of 20% in the AG 1 and 7.3% in the AG 2. In the AG 1 11.4% confirmed an orthodontical treatment and 47.9% of the probants examined indicated a desire for treatment. On the other hand, the proportion of orthodontically treated in AG 2 amounted to 31.1% and 37.8% expressed a desire for treatment. Dentofacial anomalies determined with the help of the OGI in the AG 1 as the most frequent were in the form of a distal bite (sagittal stage/group of D) with 55.5% of the examined pupils being documented. However here severity development stages 1 and 2 outweighed. Proportionally followed: confining (group E) with 21% and the vertical stage/deep bite (group T) with 7.8%. All other groups were represented by only small proportions, craniofacial anomalies (group A) were not diagnosed. Anomalies with severity development 1 and 2 were determined in 64.1% of the examined children. In the AG 2 examined with the DAI, the anomalies of space conditions with 58% exceeded anomalies of occlusion conditions with 38.9% and anomalies of dentition with 9.8%. An urgent orthodontical treatment need was determined in the AG 1 with 35.9% of the probants (severity development 3 to 5) and in the AG 2 with 16.8% (DAI values over 32). In the AG 2 too, over 60% DAI values from 13 to 25 were determined, 26% exhibited DAI values between 26 and 31. During the statistic evaluation the "Statistical Package found for Social Sciences (SPSS)" version 11.51 S with a significant level of 5% was used. Derived from the results of our analysis, the recommendation can be made that the methodology of the Orthodontical Groups of Indications for the employment is to be regarded as a possibility with dental preventive medical examinations in the public health service as a suitable equipment and so far allows the subjective estimate of the orthodontical treatment necessity to be made.