Surgical Bone Implantation Technique for Rat Tibia Models of Diabetes and Osteoporosis.

The rat has long served as a valuable animal model in implant dentistry and orthopedics, particularly in studying the interactions between biomaterials and bone tissue. The rat's tibia is frequently chosen due to its easy surgical access through thin tissue layers (skin and muscle) and the flattened shape of its medial face, facilitating the surgical insertion of intraosseous devices. Additionally, this model enables the induction of specific diseases, mimicking various clinical conditions to assess biological responses to different implant conditions like geometry, surface texture, or biological cues. However, despite its robust cortical structure, certain intraosseous devices may require adaptations in design and size for successful implantation. Therefore, establishing standardized surgical methods for manipulating both soft and hard tissues in the implantation region is essential for ensuring proper implant or screw device placement, particularly in fields like implant dentistry and orthopedics. This study included eighty Sprague Dawley rats divided into two groups based on their respective diseases: Group 1 with osteoporosis and Group 2 with Type 2 Diabetes. Implantations were performed at 4 weeks and 12 weeks, with the same surgeon following a consistent surgical technique. A positive biological response was observed, indicating complete osseointegration of all implants placed. These results validate the success of the surgical protocol, which can be replicated for other studies and serve as a benchmark for the biomaterials community. Notably, osseointegration values remained stable at both 4 weeks and 12 weeks for both disease models, demonstrating a durable integration of the implant over time and emphasizing the establishment of an intimate bone connection as early as 4 weeks.

The EORTC QLQ43 and FACT H&N questionnaires of quality of life at 1 and 5 years after treatment and dental care in head and neck cancer patients: a pilot study.

PURPOSE: This study aimed to examine health-related quality of life (HRQoL) in head and neck cancer patients at 1 and 5 years after successful treatment of their tumors, and to explore the usefulness of 2 instruments for assessing the need of dental care services. METHODS: This cross-sectional pilot study included 20 adult patients with head and neck cancer who completed the Functional Assessment of Cancer Therapy-Head and Neck (FACT H&N) Symptom Index and the European Organization for Research and Treatment of Cancer Quality of Life Head and Neck Module (EORTC QLQ-H&N43) after 1 and 5 years of treatment. RESULTS: Mean (standard deviation, SD) scores of the FACT H&N Symptom Index were higher (better HRQoL) at 5 years than at 1 year (24.1 [4.4] vs. 21.1 [6.4]; p = 0.236). Only three of the ten items of FACT H&N (swallow, pain in mouth/throat or neck, and solid foods) evaluated oral health. In the EORTC QLQ-H&N43 questionnaire, scores were lower at 5 years (better HRQoL) in almost all multi- and single-item symptoms. This questionnaire includes four multi-item scales (pain in the mouth, social eating, swallowing, and problems with teeth) measuring dental and orthodontic needs. CONCLUSION: HRQoL in patients with head and neck cancer improved with the length of follow-up. The EORTC QLQ-H&N43 has more items addressing oral health compared to the FACT H&N Symptom Index and may be more adequate to assess the need of dental therapy in clinical practice.

Comparison of cephalometric variables between adult Spanish and Japanese women with Class I malocclusion.

OBJECTIVE: To our knowledge, no study has compared the facial and dental morphology of adult Latin and Japanese populations. The purpose of this study was to assess differences in the facial and dental morphology between adult Spanish and Japanese women with Class I malocclusion using lateral cephalograms. MATERIALS AND METHODS: The lateral cephalograms of 33 adult Spanish and 33 adult Japanese women were traced and digitized by a single investigator. All patients satisfied the following criteria: female sex; age 18-35 years; skeletal Class I malocclusion (ANB angle, 2°-5°; angle Class I malocclusion; arch length discrepancy, -10 to + 10 mm; overjet, 1-5 mm; overbite, 1-5 mm); absence of congenital anomalies, significant facial asymmetry, or congenitally missing teeth, with the exception of the third molars; significant temporomandibular joint problems; severe crowding; and no history of orthodontic treatment. RESULTS: Eleven and six angular measurements for the skeletal and dental hard tissues, respectively, were computed in accordance with previous studies. The results showed that Japanese women had significant maxillary and mandibular protrusion, clockwise mandibular rotation, greater labial tipping of incisors, and a smaller interincisal angle compared with Spanish women. CONCLUSION: At the time of orthodontic treatment planning, it is important to consider the facial and dental morphological characteristics of individual ethnic groups to achieve satisfactory outcomes and retention. The findings of this study provide valuable information that will aid in orthodontic treatment planning for adult Spanish and Japanese women.

Multidisciplinary oral rehabilitation in partially edentulous adult patients with malocclusion: A cross-sectional survey study.

BACKGROUND: A cross-sectional survey was conducted to gather information regarding the opinion of Brazilian specialists in both orthodontics and implantology on multidisciplinary oral rehabilitation in partially edentulous patients with malocclusion. MATERIAL AND METHODS: A total of 305 specialists participated in a telephone survey and answered an ad hoc 10-item questionnaire, including the request of total skull cone-beam tomographies (CBCT) and the use of 3D digital planning software, the best moment of treatment to place dental implants, and the integration of orthodontics in implantology. RESULTS: Most participants did not request CBCT (90.8%) or 3D digital planning software images (92.3%) to diagnose and plan multidisciplinary oral rehabilitation. By contrast, 91.1% of participants would use an already dental implant as anchorage for orthodontics, 73.8% had already used implants for this purpose, 47.9% selected 4 months as the waiting time between implant placement and its use as anchorage, and 58.4% had already placed dental implants having in mind using them as anchorage for orthodontics and anticipating the oral rehabilitation process. Moreover, 93.4% of participants stated to avoid applying orthodontic forces in implants with unfavourable prognosis. A total of 67.9% of participants got the degree of specialist in Orthodontics before that of specialist in Implantology. The main reason for obtaining the other specialty degree was to be able to thoroughly exercise the two specialties. CONCLUSIONS: The use of technological advances, such as CBCT and 3D digital planning software was limited. Most dental specialists would wait the osseointegration recommended time before applying orthodontic forces and thus using them as anchorage for orthodontics. The majority of interviewed dentists sought the other specialty to acquire multidisciplinary knowledge. Key words:Cross-sectional study, orthodontics, implantology, partially edentulous, malocclusion, oral rehabilitation.

A reabilitação oral multidisciplinar para pacientes adultos edêntulos parciais portadores de má oclusão Trilogia parte 3: a integração da Ortodontia com a Implantodontia / Multidisciplinary oral rehabilitation for partial edentulous adult patients with malocclusion Trilogy part 3: the integration of Orthodontics with Implantology

Para se conduzir uma reabilitação oral multidisciplinar em um paciente adulto edêntulo parcial portador de má oclusão deve haver uma equipe de cirurgiões-dentistas especialistas trabalhando sincronizadamente. Juntos, devem definir qual é o melhor plano de tratamento que integre a Ortodontia com a Implantodontia para a obtenção de uma oclusão estável e harmonização facial. No entanto, se um único cirurgião-dentista pretende conduzir uma reabilitação oral multidisciplinar em um paciente adulto edêntulo parcial portador de má oclusão, ele deve reunir habilidades multidisciplinares para competentemente diagnosticar, planejar e conduzir o caso. Um total de 305 cirurgiões-dentistas especialistas simultaneamente em Ortodontia e em Implantodontia foram entrevistados e responderam a um questionário para coletar importantes informações sobre a integração da Ortodontia com a Implantodontia para a instalação de implantes dentários em pacientes adultos edêntulos parciais, que também necessitam de tratamento ortodôntico. Este estudo foi dividido em uma trilogia de artigos científicos. Esta, a Parte 3, refere-se às perguntas sobre a primeira formação especializada desses cirurgiões-dentistas e os motivos que os levaram a cursar outra especialidade para integrar a Ortodontia com a Implantodontia. Os resultados demonstraram que a maioria dos cirurgiões-dentistas entrevistados buscou adquirir conhecimentos multidisciplinares, mas que a busca por maiores ganhos financeiros também foi um dos principais motivos para a obtenção de outro título de especialista.(AU)

In pursuance of conducting a multidisciplinary oral rehabilitation for a partially edentulous adult patient with malocclusion, there must be a dental specialist team working synchronically. Together they must define the most suitable treatment plan to accomplish stable occlusion and facial harmonization. However, if one single dentist intends to conduct a multidisciplinary oral rehabilitation for a partially edentulous adult patient with malocclusion, he should have the expertise in multiple specialties to competently diagnose, plan and conduct the case. A total of 305 dental specialists in both orthodontics and implantology were interviewed and answered a questionnaire in order to collect relevant information about the integration of orthodontics to implantology to place dental implants on partially edentulous adult patients that also need orthodontic treatment. This study was divided in a trilogy of scientific articles. This, the Part 3, refers to questions about their first post graduate training and the reasons that led them to get another specialist title to integrate orthodontics to implantology. The results showed that the majority of interviewed dentists sought to acquire multidisciplinary knowledge. But the surch for greater financial gains was also one of the main reasons for obtaining another specialist title.(AU)

A reabilitação oral multidisciplinar para pacientes adultos edêntulos parciais portadores de má oclusão Trilogia parte 1: a solicitação de tomografias de feixe cônico total do crânio e o uso de softwares tridimensionais de planejamento digital / Multidisciplinary oral rehabilitation for adult partial edentulous patients with malocclusion Trilogy part 1: the request of total skull cone beam tomographies and the use of three-dimensional digital planning software

Uma tomografia de feixe cônico total do crânio associada a um software tridimensional de planejamento digital permite um diagnóstico mais completo e a simulação de diferentes planos de tratamento para a reabilitação oral multidisciplinar de pacientes adultos edêntulos parciais portadores de má oclusão. Um total de 305 cirurgiões-dentistas especialistas, simultaneamente em Ortodontia e em Implantodontia, foram entrevistados e responderam a um questionário com o objetivo de coletar informações importantes sobre a integração da Ortodontia com a Implantodontia para a instalação de implantes dentários em pacientes adultos edêntulos parciais que também necessitam de tratamento ortodôntico. Este estudo foi dividido em uma trilogia de artigos científicos. Esta, a Parte 1, refere-se a perguntas sobre a solicitação de uma tomografia de feixe cônico total do crânio e o uso de softwares tridimensionais de planejamento digital para diagnosticar e planejar reabilitações orais multidisciplinares em pacientes adultos edêntulos parciais portadores de má oclusão. Como a tecnologia já está disponível, era de se esperar uma maior solicitação de tomografias de feixe cônico total do crânio e um maior uso de softwares tridimensionais de planejamento digital por cirurgiões-dentistas, especialistas simultaneamente em Ortodontia e em Implantodontia, mas os resultados mostram o contrário.(AU)

A total skull cone beam tomography associated to a three-dimensional digital planning software permits a more complete diagnostic and the simulation of different treatment plans for the multidisciplinary oral rehabilitation of partially edentulous adult patients with malocclusion. A total of 305 dental specialists in both orthodontics and implantology were interviewed and answered a questionnaire in order to collect relevant information about the integration of orthodontics to implantology for the placement of dental implants on partially edentulous adult patients that also need orthodontic treatment. This study was divided in a trilogy of scientific articles. This, the Part 1, refers to questions about the request of a total skull cone beam tomography and the use of three-dimensional planning softwares to diagnose and plan a multidisciplinary oral rehabilitation for partially edentulous adult patients with malocclusion. As technology is already available, it was expected a higher number of dental specialists in both orthodontics and implantology requesting a total skull cone beam tomography and a greater use of three-dimensional digital planning softwares. But results show the opposite. (AU)

Effect of low-level laser therapy after rapid maxillary expansion: a clinical investigation.

To evaluate the effectiveness low-level laser therapy (LLLT) on the repair of the mid palatal suture, after rapid maxillary expansion (RME). A single-operator, randomized single-blind placebo-controlled study was performed at the Orthodontic Department at the Dental Hospital of Bellvitge. Barcelona University, Hospitalet de Llobregat, Spain. Thirty-nine children (range 6-12 years old), completed RME and were randomized to receive active LLLT (n = 20) or placebo (n = 19). The laser parameters and dose were 660 nm, 100 mW, CW, InGaAlP laser, illuminated area 0.26 cm(2), 332 mW/cm(2), 60 s to four points along midpalatal suture, and 30 s to a point each side of the suture. A total of seven applications were made on days 1, 7, 14, 28, 42, 56, and 70 of the retention phase RME. A cone beam computed tomography (CBCT) scan was carried out on the day of the first laser treatment, and at day 75, a second CBCT scan was performed. Two radiologists synchronized the slices of two scans to be assessed. P = 0.05 was considered to be statistically significant. At day 75 of the suture, the irradiated patients presented a greater percentage of approximate zones in the anterior (p = 0.008) and posterior (p = 0.001) superior suture-and less approximation in the posterior superior suture (p = 0.040)-than the placebo group. LLLT appears to stimulate the repair process during retention phase after RME.

Erupción de la dentición permanente en un grupo de 1,123 niños y niñas catalanes / Eruption of the permanent teeth in a group of 1,123 catalan children

Objetivo. Determinar las edades medias de erupción de los dientes permanentes de nuestra muestra. Método. Se han estudiado 605 niños y 518 niñas de raza blanca y de edades comprendidas entre los 5 y los 14 años, todos residentes en la población de Tona (Osona, Catalunya). Las exploraciones se realizaron en las tres escuelas que hay en la población, siguiendo el método transversal. Los datos recogidos fueron: nombre y apellidos del niño explorado, fecha de nacimiento, sexo, peso, talla y odontograma de dentición permanente. Las estimaciones de las edades medias de erupción de cada diente se calcularon aplicando el método de Kärber. Resultados. Después de validar la muestra en cuanto a tamaño, edad, peso y talla, confirmamos que nos encontrábamos frente a un grupo homogéneo e igual al resto de los niños catalanes. Presentamos las tablas de las edades medias de erupción para cada diente permanente en los dos maxilares, para ambos sexos. Conclusiones. Los datos de peso y talla de la muestra estudiada no presentan diferencias significativas con las que aportó De la Puente. Se han confeccionado, por primera vez, las tablas de las edades de erupción de todos los dientes permanentes (exceptuando los terceros molares) para una muestra de niños y niñas catalanes (AU)