ABSTRACT Introduction: Symmetry is balance, some correspondence in the size, form, and arrangements of parts on opposite sides of a plane, line, or point. The opposite of this concept is asymmetry, or imbalance. Objective: This retrospective study compared two methods for assessing arch symmetry with linear measurements based on triangles, to determine their applicability and efficiency. Methods: Two groups were enrolled: children (n=20) and adults (n=20), and the arch symmetry was assessed from linear measurements. Method 1: the incisor-canine (INC), canine-molar (CM), and incisor-molar (INM) distances (paired t-test and Pearson correlation). Method 2: a mathematical equation between the cusps measurements of the canines and the distobuccal of the first molars leading to result 1 (t-test for one sample and bootstrapping analysis). Dental casts were digitized and analyzed using a software program. The Bland-Altman test compared the methods (α=0.05). Results: The Bland-Altman test revealed concordance between the methods; however, separately the results were different: In method 1, the mandibular arch did not demonstrate correlation (children, INC r=0.33; CM r=0.45; INM r=0.51; adults, CM r=0.46; INM r=0.35), however, the maxilla revealed a strong correlation in children and a strong/moderate correlation in adults. In method 2, both arches were symmetrical (p>0.05). Conclusion: Method 1 may be appropriate during orthodontic treatment, and method 2 may be indicated for final treatment. These methods are useful; however, only method 1 identified the side of asymmetry. The methods can contribute to future studies in syndromic and non-syndromic patients, before and after orthognathic surgeries and orthodontic treatment, comparing results.

RESUMO Introdução: Simetria é o equilíbrio ou correspondência no tamanho, na forma e na disposição das partes em lados opostos de um plano, linha ou ponto. O oposto desse conceito é assimetria ou desequilíbrio. Objetivo: Esse estudo retrospectivo comparou dois métodos de avaliação da simetria da arcada a partir de medidas lineares baseadas em triângulos, para determinar sua aplicabilidade e eficiência. Métodos: A amostra foi composta por dois grupos: crianças (n=20) e adultos (n=20), e a simetria das arcadas foi avaliada a partir de medidas lineares. Método 1: as distâncias incisivo-canino (INC), canino-molar (CM) e incisivo-molar (INM) (testet pareado e correlação de Pearson). Método 2: uma equação matemática com as medidas entre as cúspides dos caninos e a as cúspides distovestibulares dos primeiros molares, levando ao resultado 1 (teste t para uma amostra e análise de bootstrapping). Os modelos dentários foram digitalizados e analisados por meio de um software. O teste de Bland-Altman comparou os métodos (α = 0,05). Resultados: O teste de Bland-Altman revelou concordância entre os métodos; no entanto, separadamente, os resultados foram diferentes: no Método 1, a arcada inferior não demonstrou correlação (crianças, INC r=0,33; CM r=0,45; INM r=0,51; adultos, CM r=0,46; INM r=0,35); no entanto, a arcada superior revelou uma forte correlação em crianças e uma correlação forte/moderada em adultos. No Método 2, ambas as arcadas eram simétricas (p>0,05). Conclusões: O Método 1 pode ser apropriado durante o tratamento ortodôntico, e o Método 2 pode ser indicado para o tratamento final. Esses métodos são úteis; entretanto, somente o Método 1 identificou o lado da assimetria. Os métodos podem contribuir para estudos futuros em pacientes sindrômicos e não sindrômicos, antes e depois de cirurgias ortognáticas e tratamento ortodôntico, comparando os resultados.

Abstract: This cross-sectional observational study aimed to evaluate and compare facial metrics in women aged 20–65 years using a three-dimensional (3D) stereophotogrammetry system and to establish standardized values for facial metric variations in different age subgroups. This study included 84 Caucasian women divided into two groups based on their age: group 1 (G1) included women aged 20–40 years and group 2 (G2) included women aged 41–65 years. Twenty-one morphometric points on the face were identified, and the facial images were captured using a 3D stereophotogrammetry system, Twenty-three linear measures and 12 angular measures were evaluated, revealing statistically significant differences in 11 linear and 5 angular measures between the groups. In the G2 group, nasal and mouth width, lip philtrum height, Tragus-Nasion and Tragus-Pronasale lengths were increased, along with increased nasofrontal angle, decreased palpebral fissure inclination, and lip vermilion angles. However, palpebral fissure width and height, binocular width, and lip vermilion height were reduced. The aging process in women causes substantial changes in facial features, particularly in the middle and lower thirds of the face. Conversely, no major changes were observed in the upper third of the face. Our study findings provide potential insights for clinicians in developing facial rejuvenation procedures as well as for forensic purposes and surgical planning. The standardized facial metrics values in different age subgroups can guide clinicians in determining appropriate treatment plans for patients seeking facial rejuvenation.

Abstract Denture biofilm acts as a potential reservoir for respiratory pathogens, considerably increasing the risk of lung infections, specifically aspiration pneumonia, mainly 48h after hospital admission. The establishment of a straightforward, affordable, and applicable hygiene protocol in a hospital environment for the effective control of denture biofilm can be particularly useful to prevent respiratory infections or reduce the course of established lung disease. Objectives To evaluate the anti-biofilm effectiveness of denture cleaning protocols in hospitalized patients. Methodology The maxillary complete dentures (MCDs) of 340 hospitalized participants were randomly cleaned once using one of the following 17 protocols (n=20): brushing with distilled water, toothpaste, or neutral liquid soap (controls); immersion in chemical solutions (1% sodium hypochlorite, alkaline peroxide, 0.12% or 2% chlorhexidine digluconate), or microwave irradiation (650 W for 3 min) combined or not with brushing. Before and after the application of the protocols, the biofilm of the intaglio surface of the MCDs was evaluated using two methods: denture biofilm coverage area (%) and microbiological quantitative cultures on blood agar and Sabouraud Dextrose Agar (CFU/mL). Data were subjected to the Wilcoxon and Kruskal-Wallis tests (α=0.05). Results All 17 protocols significantly reduced the percentage area of denture biofilm and microbial and fungal load (P<0.05). The highest percentage reductions in the area of denture biofilm were observed for 1% hypochlorite solution with or without brushing and for 2% chlorhexidine solution and microwave irradiation only in association with brushing (P<0.05). The greatest reductions in microbial and fungal load were found for the groups that used solutions of 2% chlorhexidine and 1% hypochlorite and microwave irradiation, regardless of the association with brushing (P<0.05). Conclusions A single immersion for 10 min in 1% sodium hypochlorite, even in the absence of brushing, proved to be a straightforward, rapid, low-cost, and effective protocol for cleaning the dentures of hospitalized patients.

Abstract This study aimed to evaluate the influence of cleft width on dental arch symmetry of children with unilateral cleft lip and palate. Forty-one children were subjected to impression preoperatively (T1; mean age = 0.31 ± 0.07 years) and postoperatively (T2; mean age = 6 .73 ± 1.02 years). Eighty-two digitized dental casts were analyzed by stereophotogrammetry software. The cleft palate width was measured in the anterior (P-P’), middle (M-M’), and posterior (U-U’) regions. Also, the following measurements were obtained: anterior intersegment (I-C’) and intrasegment (I-C); total intersegment (I-T’) and intrasegment (I-T); cleft-side (C’-T’) and non-cleft-side (C-T) canine tuberosity. Paired t test and Pearson correlation coefficient were applied (α = 5%). Cleft width had the following means: 10.16 (± 3.46) mm for P-P’, 12.45 (± 3.00) mm for M-M’, and 12.57 (± 2.71) mm for U-U’. In the longitudinal analysis, I-C’ had a significant reduction, while the other measurements significantly increased (p < 0.001). Asymmetry was verified in the following analyses at T1: I-C’ vs. I-C and I-T’ vs. I-T (p < 0.001); at T2, only in I-C’ vs. I-C (p < 0.001). At T1, P-P’ vs. I-C’ (r = 0.722 and p < 0.001), P-P’ vs. I-T’ (r = 0.593 and p < 0.001), M-M’ vs. I-C’ (r = 0.620 and p < 0.001), and M-M’ vs. I-T’ (r = 0.327 and p < 0.05) showed a positive and significant correlation. At T2, there was a correlation between M-M’ and I-C’ (r = 0.377 and p < 0.05). In conclusion, the anterior and middle cleft widths influenced palatal asymmetry in the first months of life, while middle width influenced residual asymmetry. Fortyone Forty one T1 T (T1 031 0 31 0.3 007 07 0.0 years T2 (T2 73 .7 102 1 02 1.0 years. . Eightytwo Eighty two software PP, PP P , (P-P’) MM, MM M (M-M’) UU U (U-U’ regions Also obtained IC I C (I-C’ (I-C) IT (I-T’ (I-T) cleftside side CT (C’-T’ noncleftside non (C-T tuberosity α 5%. 5 5% 5%) means 1016 10 16 10.1 ( 3.46 346 3 46 1245 12 45 12.4 3.00 300 00 1257 57 12.5 2.71 271 2 71 UU. U-U’ analysis reduction 0.001. 0001 0.001 001 0.001) vs P-P r 0722 722 0.72 0.001, 0593 593 0.59 M-M 0620 620 0.62 0327 327 0.32 0.05 005 05 0377 377 0.37 0.05. conclusion life (T 03 0. 7 1. (P-P’ (M-M’ (U-U (I-C (I-T (C’-T 101 10. 3.4 34 4 124 12. 3.0 30 125 2.7 27 U-U 000 0.00 072 72 0.7 059 59 0.5 062 62 0.6 032 32 037 37 (P-P (M-M 3. 2. 06

Abstract The tribe Serrasalmini is a diverse group with paraphyletic genera and taxonomic uncertainties. Several studies have been carried out in this group of fish in order to understand this problem, including the cytogenetic approach. In this study, three species of a clade of Serrasalmini were characterized cytogenetically - Pristobrycon striolatus, Catoprion absconditus and Pygopristis denticulatus. The three species presented diploid number (2n) equal to 62 chromosomes, of one and two arms, with karyotypic formulas and species-specific fundamental numbers. Heterochromatin is centromeric and terminal (bi-telomeric) in most chromosomes, with a conspicuous interstitial block at pair 1 (m) in all three species. The nucleolar organizer regions were multiple and C-band positive, and their location was confirmed via 18S ribosomal DNA mapping; however, with additional sites. The 5S rDNA was located in interstitial region of long arm of pair 1 (m), in the three species (homeologous). Moreover, we observed synteny between 18S and 5S in the species C. absconditus and P. denticulatus, which, according to fiber-FISH, are interspersed. Thus, the maintenance of 2n (62) evidences the diversification of chromosomal formulas within the clade by non-Robertsonian rearrangements and reflects the paraphyly of the related species.

Resumo Objetivo Compreender as respostas adaptativas de colostomizados antes e após o uso do oclusor. Métodos Estudo qualitativo com 19 indivíduos colostomizados que atendiam a critérios de indicação do oclusor. Os dados coletados foram por meio de duas entrevistas em momentos distintos, analisados pelo software IRaMuTeQ procedendo análise de conteúdo temático sob o prisma do Modelo de Adaptação de Calista Roy. Resultados Antes da utilização do oclusor, os colostomizados sentiam-se constrangidos, a bolsa coletora desencadeou mudanças nas atividades diárias, nutrição e o receio de vazamentos proporcionou vergonha, isolamento e redução das atividades religiosas. Após o uso do oclusor, houve uma nova expectativa de viver, do interagir. As mudanças ocorreram no resgate no comportamento positivo em atividades diárias, como forma de vestir, repouso e à satisfação de retomar atividades que eram realizadas antes da colostomia. Conclusão Constatou-se que as respostas eram ineficazes antes do uso e eficazes após o uso do oclusor.

Abstract Objective To understand the adaptive responses of colostomy patients before and after using an occluder. Methods This is a qualitative study with 19 colostomy patients who met the criteria for occluder recommendation. Data collected were through two interviews at different times, analyzed by the IRaMuTeQ software, proceeding with thematic content analysis from the perspective of Calilsta Roy’s Adaptation Model. Results Before the use of an occluder, colostomy patients felt embarrassed, the collection bag triggered changes in daily activities, nutrition and the fear of leaks provided shame, isolation and reduction of religious activities. After using an occluder, there was a new expectation of living, of interacting. The changes occurred in the rescue of positive behavior in daily activities, such as dressing, rest and the satisfaction of resuming activities that were performed before colostomy. Conclusion It was found that the responses were ineffective before use and effective after using an occluder.

Resumen Objetivo Entender las respuestas adaptativas de personas con colostomías antes y después del uso de obturador. Métodos Estudio cualitativo con 19 individuos con colostomía que atendían criterios de indicación de obturador. Los datos fueron recopilados por medio de dos entrevistas en distintos momentos, fueron analizados por el software IRaMuTeQ y luego se realizó análisis del contenido temático bajo el prisma del Modelo de Adaptación de Calista Roy. Resultados Antes de la utilización del obturador, las personas con colostomías se sentían avergonzadas, la bolsa colectora desencadenó cambios en las actividades diarias, nutrición y el temor de escapes ocasionó vergüenza, aislamiento y reducción de las actividades religiosas. Después del uso del obturador, hubo una nueva expectativa de vivir, de interactuar. Los cambios se vieron en el rescate del comportamiento positivo en actividades diarias, como forma de vestir, reposo y el placer al retomar actividades que realizaban antes de la colostomía. Conclusión Se constató que las respuestas eran ineficaces antes del uso del obturador, y eficaces después.

RESUMO Vários patógenos, incluindo SARS-CoV-2, são capazes de permanecer viáveis em superfícies durante dias, o que favorece a contaminação cruzada. Medidas preventivas são essenciais para prevenir infecções e controlar a propagação da COVID- 19. A régua de Fox é um dispositivo essencial no planejamento clínico de próteses totais e é inevitável o contato com os fluidos orais do paciente, durante seu manejo. Apesar de sua importância, a régua de Fox convencional de policarbonato é facilmente danificada com o processo de esterilização. Portanto, o objetivo deste artigo é propor a utilização de uma régua Fox descartável. A confecção é feita de forma simples com palitos de madeira unidos por cola de cianoacrilato, seguindo o mesmo formato do convencional, mas com a vantagem adicional de ser produzida em tamanho individualizado de acordo com o rebordo superior. A régua Fox descartável proposta permite obter o paralelismo do rolete de cera superior com a linha bipupilar e com o plano de Camper. Portanto, o dispositivo descartável descrito neste artigo foi capaz de desempenhar as mesmas funções do convencional, de forma prática, sem riscos de contaminação cruzada e com baixo custo.

ABSTRACT Numerous pathogens, including SARS-CoV-2, can remain viable on surfaces over days, which favors cross-contamination. Preventive measures are essential to prevent infections and control the spread of COVID-19. Fox ruler is an essential device in the clinical planning of complete dentures and the contact with the patient’s oral fluids during handling is unavoidable. Despite its importance, the conventional polycarbonate Fox ruler is easily damaged in the sterilization process. Therefore, the purpose of this article is to propose the use of a disposable Fox ruler. The confection is carried out in a simple way with wooden toothpicks joined by cyanoacrylate glue, following the same shape as the conventional one, but with the additional advantage of being made in an individual size according to the upper edge. The proposed disposable Fox ruler makes it possible to obtain the parallelism of the upper wax roller with the bipupillary line and with the Camper plane. Therefore, the disposable device described in this article was able to perform the same functions as the conventional one, in a practical way, without risks of cross contamination and with low cost.

Abstract To assess facial changes after oral rehabilitation with complete dentures (CDs) by 3D technology allows understanding the results of a treatment that changes facial proportions. Precise outcome parameters can improve decision making. Objective This descriptive observational research aimed to assess facial changes in completely edentulous patients after oral rehabilitation with a CD by a 3D stereophotogrammetry system. Methodology 30 edentulous patients (7 men and 23 women), aged 50 to 75, were analyzed with stereophotogrammetry at 28 previously determined anthropometric landmarks, at 2 different times: T1, before treatment, and T2, after inserting the CDs. Images were analyzed with a specific software for linear and angular measurements. The paired t-test was used to compare timestamps (α=0.05). Results Major changes were observed in 7 of the 13 linear measures and 7 of the 9 angular measures. The following linear measurements had an increase: Sn-Gn (lower third of the face), Ls-Li (height of the vermilion lip), and ChL-ChR (mouth width). Sn-Ls (nasal philtrum height) decreased. For angular measurements, Sn-St-Pg (lower facial convexity) angles increased, and the Prn-Sn-Ls (nasolabial angle) and GoR-Pg-GoL (mandible convexity) angles decreased. Conclusions Major facial changes in newly rehabilitated edentulous patients with CDs included an increase of the lower third of the face, of the vermilion lip, of mouth width, and of the lower facial convexity, and a decrease of the nasolabial angle and mandible convexity.

Resumo A fissura de lábio, alvéolo e palato é uma malformação congênita causada pela falta de fusão dos processos embrionários labial e palatino, que podem comprometer as principais funções do sistema estomatognático. Utilizando o Nordic Orofacial Test - Screening (NOT-S), este estudo transversal observacional, objetivou avaliar a presença da disfunção orofacial nos indivíduos com fissura de lábio, alvéolo e palato em relação a indivíduos sem fissura ou anomalia craniofacial. Cento e vinte indivíduos entre 32 e 65 anos de idade foram selecionados e divididos em dois grupos: pacientes sem fissura labiopalatina (N-CLAP) e pacientes com fissura de lábio, alvéolo e palato (CLAP). Os dois grupos foram combinados por gênero. Cada indivíduo foi entrevistado e submetido a uma avaliação clínica durante a qual o NOT-S foi utilizado para avaliar a disfunção orofacial. O teste de Mann-Whitney comparou desempenho no NOT-S entre os grupos. O teste Qui-Square comparou os domínios NOT-S entre os grupos. A concordância intra-examinador foi K=0,75. Uma comparação dos escores de NOT-S entre os grupos revelou diferenças estatisticamente significativas no gênero (p<0,001), mas não foram encontradas diferenças estatisticamente significativas na comparação de gênero intragrupo. A avaliação dos domínios de NOT-S entre os grupos N-CLAP e CLAP apresentou diferenças estatisticamente significativas nos domínios II (p=0,021), IV (p<0,001) e VI (p=0,002) da entrevista e diferenças significativas em todos os domínios do exame clínico (p<0,001). Indivíduos com CLAP apresentaram maior presença de disfunção orofacial do que os indivíduos sem fissura labioapalatina, conforme avaliado pelo NOT-S.

Abstract Cleft lip, alveolus and palate is a congenital malformation caused by the lack of fusion of the lip and palate embryonic processes, which may disrupt the main functions of the stomatognathic system. Aim: This study aimed to assess the orofacial dysfunction in individuals with cleft lip, alveolus, and palate compared to non-cleft patients. One hundred and twenty individuals between 32 and 65 years of age were selected in the Craniofacial Center and in the School of Dentistry and divided into two groups: non-cleft patients (N-CLAP) and cleft lip, alveolus, and palate patients (CLAP). The two groups were matched by gender. Each individual was interviewed and submitted to a clinical evaluation during which the NOT-S was used to assess orofacial dysfunction. To verify the intra-examiner agreement, the values were compared using the Kappa test. The Mann-Whitney test compared performance on the NOT-S between the groups. The Chi-Square test compared the NOT-S domains between the groups. A comparison of the NOT-S scores between the groups revealed statistically significant differences in gender (p<0.001), but no statistically significant differences in the intragroup gender comparison were found. The assessment of the NOT-S domains between the N-CLAP and CLAP groups exhibited statistically significant differences in domains: breathing (p=0.021), chewing and swallowing (p<0.001), and dryness of the mouth (p=0.002) of the interview and significant differences in all domains of the clinical examination (p<0.001). Individuals with CLAP showed more orofacial dysfunction than non-cleft patients, without gender differences, after being assessed through the NOT-S.

Abstract This study aimed to compare the linear dimensions of the dental arches of adult patients with complete unilateral cleft lip and palate (UCLP) after orthodontic and prosthetic treatment with fixed partial dentures (FPD) to patients without clefts, using 3D technology. This retrospective longitudinal study sample consisted of 35 subjects divided into two groups. Included in this sample were 15 complete UCLP individuals who had received orthodontic treatment before rehabilitation with a fixed partial denture (FG), as well as 20 patients without cleft as control group (CG). All patients were aged between 18 and 30 years. Digital dental casts were obtained in two stages: (T1) end of orthodontic treatment and (T2) one year after prosthetic rehabilitation (FG); and (T1) end of orthodontic treatment and (T2) one year after removal of the orthodontic appliance (CG). Intercanine, interfirst premolar and intermolar distances, and incisor-molar length were obtained. A precalibrated and trained examiner performed the assessments. Intergroup differences between T2 and T1 were compared between the groups using the t test or Mann-Whitney test with a significance level of 5% (p<0.05). The intercanine distance variation (T2-T1) showed statistical difference (p=0.005) increasing in the FG group and decreasing in the CG group. In the interfirst premolar distance variation, FG decreased, while CG increased with statistically significant difference (p=0.008). The intercanine distance of individuals with cleft showed stability, while that of the CG had no stability. The CG showed stability in the interfirst premolar distance, while FG had no stability. These findings showed that the FPD is capable of restricting orthodontic results, leading to a stabilization of the dental arches.

Abstract Oral health problems can influence people's Quality of Life (QoL) because of pain, discomfort, limitations, and other esthetics problems, affecting their social life, feeding, daily activities, and the individual's well-being. Objective: To compare oral health-related quality of life (OHRQoL) of children with and without oral clefts and their families. Materials and Methods: 121 children aged from 2 to 6 years, from both sexes, enrolled in the treatment routine of the Pediatric Dentistry Clinics of a Dental School and a Hospital for Cleft Treatment were divided into two groups: Group 1 - children with cleft lip and palate; Group 2 - children without cleft lip and palate. The OHRQoL was assessed using the validated Portuguese version of the Early Childhood Oral Health Impact Scale (B-ECOHIS). The questionnaire was answered individually, only once, at a private place. Mann-Whitney U test was used to verify differences between groups. Spearman's Rho test was used to associate sex and age with quality of life. The level of significance was set at 5% (p<0.05). Results: According to the parents’ perception on the OHRQoL of children with and without cleft lip and palate, oral health of children with oral clefts (Group 1) had a statistically significant impact on OHRQoL. The correlation of sex with impact on OHRQoL did not show statistically significant differences. On the other hand, the higher the age the higher the impact on QoL. Conclusions: The group comparison revealed that the cleft lip and palate negatively impacted on OHRQoL of 2 to 6-year-old children and their parents.

Abstract The repair of bone defects raises the interest of investigators in several health specialties. Grafting techniques with bone substitutes and laser therapies have been investigated to replace autogenous bone and accelerate the bone healing process. Objective To evaluate the effect of photobiomodulation therapy (PBMT) associated with guided bone regeneration (GBR) in critical size defects. Material and Methods The study was conducted on 80 male rats (Rattus norvegicus albinus, Wistar) submitted to surgical creation of a critical size defect on the calvaria, divided into eight study groups: group C (control - only blood clot); group M (collagen membrane); group PBMT (photobiomodulation therapy); group AB (autogenous bone); group AB+PBMT; group AB+M; group PBMT+M; group AB+PBMT+M. The animals were killed 30 days postoperatively. After tissue processing, bone regeneration was evaluated by histomorphometric analysis and statistical analyses were performed (Tukey test, p<0.05). Results All groups had greater area of newly formed bone compared to group C (9.96±4.49%). The group PBMT+M (achieved the greater quantity of new bone (64.09±7.62%), followed by groups PBMT (47.67±8.66%), M (47.43±15.73%), AB+PBMT (39.15±16.72%) and AB+PBMT+M (35.82±7.68%). After group C, the groups AB (25.10±16.59%) and AB+M (22.72±13.83%) had the smallest quantities of newly formed bone. The area of remaining particles did not have statistically significant difference between groups AB+M (14.93±8.92%) and AB+PBMT+M (14.76±6.58%). Conclusion The PBMT utilization may be effective for bone repair, when associated with bone regeneration techniques.

AbstractObjective To evaluate the effect of staining beverages (coffee, orange juice, and red wine) on the Vickers hardness and surface roughness of the base (BL) and enamel (EL) layers of improved artificial teeth (Vivodent and Trilux).Material and Methods Specimens (n=8) were stored in distilled water at 37°C for 24 h and then submitted to the tests. Afterwards, specimens were immersed in one of the staining solutions or distilled water (control) at 37°C, and the tests were also performed after 15 and 30 days of immersion. Data were analyzed using 3-way ANOVA and Tukey’s test (α=0.05).Results Vivodent teeth exhibited a continuous decrease (p<0.0005) in hardness of both layers for up to 30 days of immersion in all solutions. For Trilux teeth, similar results were found for the EL (p<0.004), and the BL showed a decrease in hardness after 15 days of immersion (p<0.01). At the end of 30 days, this reduction was not observed for coffee and water (p>0.15), but red wine and orange juice continuously reduced hardness values (p<0.0004). Red wine caused the most significant hardness changes, followed by orange juice, coffee, and water (p<0.006). No significant differences in roughness were observed for both layers of the teeth during the immersion period, despite the beverage (p>0.06).Conclusions Hardness of the two brands of acrylic teeth was reduced by all staining beverages, mainly for red wine. Roughness of both layers of the teeth was not affected by long-term immersion in the beverages.

A 43-year-old woman with a unilateral cleft lip and palate, presenting a totally edentulous maxilla and mandible with marked maxillomandibular discrepancy, attended the Prosthodontics section of the Hospital for Rehabilitation of Craniofacial Anomalies, University of São Paulo for treatment. She could not close her mouth and was dissatisfied with her complete dentures. Treatment planning comprised placement of six implants in the maxilla, four in the mandible followed by prostheses installation and orthognathic surgery. The mandibular full arch prosthesis guided the occlusion for orthognathic positioning of the maxilla. The maxillary complete prosthesis was designed to assist the orthognathic surgery with a provisional prosthesis (no metal framework), allowing reverse treatment planning. Maxillary and mandibular realignment was performed. Three months later, a relapse in the position of the maxilla was observed, which was offset with a new maxillary prosthesis. This isa complex interdisciplinary treatment and two-year follow-up is presented and discussed. It should be considered that this type of treatment could also be applied in non-cleft patients.

The Laboratory of Physiology provides support for the diagnosis of functional disorders associated with cleft lip and palate and also conducts studies to assess, objectively, the institutional outcomes, as recommended by the World Health Organization. The Laboratory is conceptually divided into three units, namely the Unit for Upper Airway Studies, Unit for Stomatognathic System Studies and the Unit for Sleep Studies, which aims at analyzing the impact of different surgical and dental procedures on the upper airways, stomatognathic system and the quality of sleep of individuals with cleft lip and palate. This paper describes the main goals of the Laboratory in the assessment of procedures which constitute the basis of the rehabilitation of cleft lip and palate, i.e., Plastic Surgery, Orthodontics and Maxillofacial Surgery and Speech Pathology.