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1.
Medicine (Baltimore) ; 99(50): e23165, 2020 Dec 11.
Artigo em Inglês | MEDLINE | ID: mdl-33327234

RESUMO

BACKGROUND: Although several researchers have analyzed the dental identity of patients experience with corrective methods using fixed and removable appliances, the consequences stay debatable. This meta-analysis intended to verify whether the periodontal status of removable appliances is similar to that of the conventional fixed appliances. METHODS: Relevant literature was retrieved from the database of Cochrane library, PubMed, EMBASE, and CNKI until December 2019, without time or language restrictions. Comparative clinical studies assessing periodontal conditions between removable appliances and fixed appliances were included for analysis. The data was analyzed using the Stata 12.0 software. RESULTS: A total of 13 articles involving 598 subjects were selected for this meta-analysis. We found that the plaque index (PLI) identity of the removable appliances group was significantly lower compared to the fixed appliances group at 3 months (OR = -0.57, 95% CI: -0.98 to -0.16, P = .006) and 6 months (OR = -1.10, 95% CI: -1.60 to -0.61, P = .000). The gingival index (GI) of the removable appliances group was lower at 6 months (OR = -1.14, 95% CI: -1.95 to -0.34, P = .005), but the difference was not statistically significant at 3 months (OR = -0.20, 95% CI: -0.50 to 0.10, P = .185) when compared with that of the fixed appliances group. The sulcus probing depth (SPD) of the removable appliances group was lower compared to the fixed appliances group at 3 months (OR = -0.26, 95% CI: -0.52 to -0.01, P = .047) and 6 months (OR = -0.42, 95% CI: -0.83 to -0.01, P = .045). The shape of the funnel plot was symmetrical, indicating no obvious publication bias in the Begg test (P = .174); the Egger test also indicated no obvious publication bias (P = .1). CONCLUSION: Our meta-analysis demonstrated that malocclusion patients treated with the removable appliances demonstrated a better periodontal status as compared with those treated with fixed orthodontic appliances. However, the analyses of more numbers of clinical trials are warranted to confirm this conclusion.


Assuntos
Má Oclusão/terapia , Aparelhos Ortodônticos Fixos/efeitos adversos , Aparelhos Ortodônticos Removíveis/efeitos adversos , Doenças Periodontais/etiologia , Adolescente , Adulto , Criança , Feminino , Humanos , Masculino , Má Oclusão/classificação , Má Oclusão/diagnóstico , Pessoa de Meia-Idade , Desenho de Aparelho Ortodôntico/tendências , Aparelhos Ortodônticos/provisão & distribução , Avaliação de Resultados em Cuidados de Saúde , Doenças Periodontais/epidemiologia , Índice Periodontal , Ensaios Clínicos Controlados Aleatórios como Assunto
2.
Acta Odontol Latinoam ; 33(2): 69-81, 2020 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-32920608

RESUMO

The aim of this study was to evaluate changes in periodontal status and maxillary buccal bone by considering clinical and tomographic parameters during the first year of orthodontic expansion with Invisalign® aligners. Upper first (1PM) and upper second (2PM) premolars of 19 patients with orthodontic expansion requirement treated with Invisalign® aligners were evaluated. Plaque index (PI), gingival index (GI), probing pocket depth (PPD), clinical attachment level (CAL) and cone beam tomographic (CBCT) records were collected at 76 sites before starting treatment (T0) and at 12 months (T1). Bone height was measured from cementoenamel junction (CEJ) to the crest cortical bone (CC). Bone thickness was measured at two levels: 4 mm (CEJ+4) and 6 mm (CEJ+6) apical to the CEJ. A descriptive analysis was made of the variations of bone thickness and height in a series of cases. The average expansion was 1.93 mm for 1PM and 167 mm for 2PM. Arithmetic mean of distance CEJ-CC in 1PM was 3.05 mm at T0, and remained at 3.05 mm at T1. Arithmetic mean of distance CEJ-CC in 2PM was 2.06 mm at T0 and 2.31 at T1. Post-expansion, most of the analyzed sites (86%) exhibited a bone thickness of ≥0.5 mm. The greatest variations between T0 and T1 were observed at the level of 1PM CEJ+ 4 and 2PM CEJ+ 6. The minimal changes in the clinical records (GI, PI, PPD and CAL) between T0 and T1 were compatible with the maintenance of gingivalperiodontal health. Invisalign® for expansion movements did not produce substantial changes in the evaluated periodontal clinical parameters or in the bone measurements. Removable appliances reduce plaque retentive factors and favor adequate oral hygiene.


Assuntos
Placa Dentária/etiologia , Má Oclusão/terapia , Maxila/diagnóstico por imagem , Saúde Bucal , Aparelhos Ortodônticos Removíveis/efeitos adversos , Técnicas de Movimentação Dentária/efeitos adversos , Tomografia Computadorizada de Feixe Cônico , Placa Dentária/microbiologia , Índice de Placa Dentária , Nível de Saúde , Humanos , Técnicas de Movimentação Dentária/instrumentação
3.
Am J Orthod Dentofacial Orthop ; 156(2): 186-192, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31375228

RESUMO

INTRODUCTION: The purpose of this study was to compare and evaluate salivary microbial levels and periodontal status in patients using a fixed lingual retainer, a removable vacuum-formed retainer, or a Hawley retainer after orthodontic treatment with fixed appliances. METHODS: Forty-five patients who finished their orthodontic treatment with fixed appliances and were about to start the retention phase were randomly divided into the following 3 groups of 15 individuals each: the fixed lingual retainer group, the vacuum-formed retainer group, and the Hawley retainer group. Periodontal measurements, such as the plaque index, gingival index, probing depth, and bleeding on probing, were obtained at the following 4 time points: at debonding (T0) and 1 week (T1), 5 weeks (T2), and 13 weeks (T3) after debonding. Saliva samples were collected 3 times in total: at T0, T2, and T3. A quantitative analysis for Streptococcus mutans and Lactobacillus casei was performed with the use of real-time polymerase chain reaction. The Kruskal-Wallis test and 1-way analysis of variance were used for the statistical comparisons of the groups. RESULTS: No statistically significant difference in salivary S mutans and L casei levels was found among the 3 groups (P >0.05). They showed no statistically significant differences in plaque index, gingival index, bleeding on probing, and probing depth values (P >0.05). All periodontal parameters showed statistically significant decreases from T0 to T3 in all 3 groups (P <0.001). The S mutans and L casei levels were decreased significantly from T2 to T3 in the lingual retainer and Hawley retainer groups, whereas they decreased significantly from T0 to T3 in the vacuum-formed retainer group. CONCLUSIONS: Fixed and removable orthodontic retainers do not differ in salivary S mutans and L casei levels and periodontal status. With all retainers, regardless of whether they are fixed or removable, oral hygiene improved after orthodontic treatment with fixed appliances.


Assuntos
Aparelhos Ortodônticos Fixos/efeitos adversos , Aparelhos Ortodônticos Removíveis/efeitos adversos , Contenções Ortodônticas/efeitos adversos , Índice Periodontal , Saliva/microbiologia , Adolescente , Adulto , Análise de Variância , Criança , DNA Bacteriano , Índice de Placa Dentária , Feminino , Humanos , Lactobacillus casei , Masculino , Higiene Bucal , Desenho de Aparelho Ortodôntico , Ortodontia Corretiva/efeitos adversos , Ortodontia Corretiva/instrumentação , Streptococcus mutans , Vácuo , Adulto Jovem
4.
Int Orthod ; 17(3): 513-518, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31326368

RESUMO

OBJECTIVES: To determine the effects of Invisalign® aligners on patients' abilities to articulate consonants. MATERIALS AND METHODS: Thirty patients undergoing active two-arch Invisalign® treatment were examined. Patients were recorded reading the rainbow passage (a passage with every phoneme represented), once with the trays inserted and once with the trays removed. The recordings were analysed by a speech pathologist for misarticulation of consonant phonemes. RESULTS: Misarticulation of consonants was significantly associated with the Invisalign® aligners inserted as based on the McNemar's statistical test (P=0.008). The fricative alveolar consonant /z/ was found to be the most impacted by the trays, followed by the consonant /s/ (P=0.016). The consonant /sh/ was not shown to be affected by the Invisalign® aligners. CONCLUSIONS: Invisalign® aligners do have an impact on the articulation of consonants. Fricative alveolar consonants were the primary phonemes impacted. Due to the fact that the efficacy of Invisalign® treatment is based primarily on compliance and that speech impairment may interfere with compliance, the information presented in this study should be conveyed to the patient before the initiation of Invisalign® treatment.


Assuntos
Aparelhos Ortodônticos Removíveis/efeitos adversos , Inteligibilidade da Fala , Fala/fisiologia , Adolescente , Adulto , Feminino , Humanos , Masculino , Má Oclusão de Angle Classe I/terapia , Má Oclusão de Angle Classe II/terapia , Pessoa de Meia-Idade , Ortodontia Corretiva , Cooperação do Paciente/estatística & dados numéricos , Adulto Jovem
5.
Angle Orthod ; 89(6): 942-945, 2019 11.
Artigo em Inglês | MEDLINE | ID: mdl-30945933

RESUMO

OBJECTIVES: To investigate the in vitro cytotoxicity of different thermoplastic materials for clear aligners on human primary gingival fibroblasts (HGFs). MATERIALS AND METHODS: Four materials for clear aligners were considered in this study: Duran (Scheu-Dental GmbH, Iserlohn, Germany), Biolon (Dreve Dentamid GmbH, Unna, Germany), Zendura (Bay Materials LLC, Fremont, CA, USA), and SmartTrack (Align Technology, San Jose, CA, USA). Three out of four materials (Duran, Biolon, Zendura) were assessed as thermoformed and nonthermoformed, whereas the SmartTrack was assessed only as thermoformed. The samples were placed at 37°C in airtight test tubes containing Dulbecco's Modified Eagle's Medium (DMEM; 0.1 mg/mL) for 14 days. The cell viability of HGFs cultured with this medium was assessed by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Data were analyzed by means of one-way and two-way analysis of variance and post hoc tests (α = 0.05). RESULTS: Each material exhibited a slight cytotoxic effect after 14 days. The highest cytotoxicity level on HGFs was achieved by Biolon (64.6% ± 3.3 of cell viability), followed by Zendura (74.4% ± 2.3 of cell viability), SmartTrack (78.8% ± 6.3 of cell viability), and finally Duran (84.6% ± 4 of cell viability), which was the least cytotoxic. In the comparison between nonthermoformed and thermoformed materials for Duran, Biolon, and Zendura, the thermoformed materials showed the highest level of cytotoxicity (P < .001). CONCLUSIONS: Under the experimental conditions of this study, all the materials for clear aligners presented a slight cytotoxicity. Biolon was the most cytotoxic and the thermoforming process increased the cytotoxicity of the materials.


Assuntos
Gengiva , Aparelhos Ortodônticos Removíveis , Sobrevivência Celular , Fibroblastos , Gengiva/citologia , Humanos , Aparelhos Ortodônticos Removíveis/efeitos adversos
6.
Eur J Orthod ; 41(1): 80-88, 2019 01 23.
Artigo em Inglês | MEDLINE | ID: mdl-29771314

RESUMO

Background: The clinical benefit of bibloc over monobloc appliances in treating obstructive sleep apnoea (OSA) has not been evaluated in randomized trials. We hypothesized that the two types of appliances are equally effective in treating OSA. Objective: To compare the efficacy of monobloc versus bibloc appliances in a short-term perspective. Patients and methods: In this multicentre, randomized, blinded, controlled, parallel-group equivalence trial, patients with OSA were randomly assigned to use either a bibloc or a monobloc appliance. One-night respiratory polygraphy without respiratory support was performed at baseline, and participants were re-examined with the appliance in place at short-term follow-up. The primary outcome was the change in the apnoea-hypopnea index (AHI). An independent person prepared a randomization list and sealed envelopes. Evaluating dentist and the biomedical analysts who evaluated the polygraphy were blinded to the choice of therapy. Results: Of 302 patients, 146 were randomly assigned to use the bibloc and 156 the monobloc device; 123 and 139 patients, respectively, were analysed as per protocol. The mean changes in AHI were -13.8 (95% confidence interval -16.1 to -11.5) in the bibloc group and -12.5 (-14.8 to -10.3) in the monobloc group. The difference of -1.3 (-4.5 to 1.9) was significant within the equivalence interval (P = 0.011; the greater of the two P values) and was confirmed by the intention-to-treat analysis (P = 0.001). The adverse events were of mild character and were experienced by similar percentages of patients in both groups (39 and 40 per cent for the bibloc and monobloc group, respectively). Limitations: The study shows short-term results with a median time from commencing treatment to the evaluation visit of 56 days and long-term data on efficacy and harm are needed to be fully conclusive. Conclusion: In a short-term perspective, both appliances were equivalent in terms of their positive effects for treating OSA and caused adverse events of similar magnitude. Trial registration: Registered with ClinicalTrials.gov (#NCT02148510).


Assuntos
Avanço Mandibular/instrumentação , Aparelhos Ortodônticos Removíveis , Apneia Obstrutiva do Sono/terapia , Adulto , Idoso , Feminino , Humanos , Masculino , Avanço Mandibular/efeitos adversos , Pessoa de Meia-Idade , Desenho de Aparelho Ortodôntico , Aparelhos Ortodônticos Removíveis/efeitos adversos , Cooperação do Paciente , Polissonografia , Método Simples-Cego , Resultado do Tratamento
7.
J Contemp Dent Pract ; 19(10): 1163-1168, 2018 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-30498169

RESUMO

AIM: To investigate the cytotoxicity and estrogenicity of Vivera® retainers by assessing their biological behavioral effects as-received from the manufacturer and after retrieved from patients. MATERIALS AND METHODS: In this, in vitro investigation six sets (maxillary and mandibular) of Vivera® retainers, three as received and three retrieved after four weeks of use by patients of an orthodontic postgraduate clinic, were immersed in the normal saline solution for 14 days following different modes of sterilization. The estrogenicity assays involved two cell lines, namely the estrogen-sensitive MCF-7 and the estrogen-insensitive MDA-MB-231. Following a 6 day incubation with the solutions to be tested, at concentrations varying from 5% to 20% v/v in medium supplemented with 2% fetal calf serum devoid of endogenous estrogens, estrogenicity was assessed by cell counting; p-Estradiol was used as positive control. The statistical analysis of data was performed with two-way analysis of variance (ANOVA) with appliance and concentration as predictors. Differences were further investigated with the Tukey multiple comparison tests at the 0.05 level of significance. RESULTS: No significant MCF-7 proliferation was induced by the three samples compared either to the eluents from as-received retainers or to the negative control. As expected, p-estradiol induced a potent stimulation of MCF-7 cell proliferation, while no effect was observed on MDA-MB-231 cells. CONCLUSION: Under the conditions of this experiment eluents of as-received and retrieved Vivera® retainers did not seem to exhibit xenoestrogenic activity. CLINICAL SIGNIFICANCE: Vivera® retainers can be used as part-time removable oral appliances following the manufacturer's instructions.


Assuntos
Proliferação de Células/efeitos dos fármacos , Estrogênios , Aparelhos Ortodônticos Removíveis/efeitos adversos , Contenções Ortodônticas/efeitos adversos , Estradiol/efeitos adversos , Humanos , Imersão , Técnicas In Vitro , Células MCF-7 , Solução Salina , Fatores de Tempo
8.
Prog Orthod ; 19(1): 25, 2018 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-30066184

RESUMO

BACKGROUND: Fixed orthodontic appliances might be associated with intraoral adverse effects on enamel, due to plaque accumulation and their colonization by oral microbes. At the same time, the demand for esthetic alternatives to orthodontic treatment, like thermoplastic aligners, is growing. However, thermoplastic aligners may behave differently intraorally than fixed appliances in terms of bacterial colonization and biofilm formation. Therefore, the aim of this prospective cohort study was to assess the salivary prevalence of the cariogenic bacteria Streptococcus mutans, Lactobacillus acidophilus, and Streptococcus sanguinis among adolescents treated orthodontically with thermoplastic aligners or fixed appliances. METHODS: Thirty adolescent patients (17 girls/13 boys; mean age 13.8 years old) were assigned to treatment with either (i) self-ligating fixed appliances with nickel-titanium archwires or (ii) aligners constructed from clear transparent polyethylenterephthalat-glycol copolyester (PET-G) thermoplastic sheets. Whole stimulated saliva was collected from each patient at three time points: at baseline (before bonding and initiation of orthodontic therapy or before insertion of the thermoplastic aligners), after 2 weeks, and after 1 month. A simplified plaque index, a simplified gingival index, and the decayed, missing, and filled teeth (DMFT) index were assessed from the clinical examination of the patients. Microbiological analysis of salivary bacteria was performed by quantitative polymerase chain reaction, followed by descriptive and inferential statistics at the 5% level. RESULTS: Although patients treated with aligners had significantly lower plaque and gingivitis scores throughout treatment compared to patients treated with fixed appliances, no significant difference could be found between the S. mutans counts of the two groups at any time through treatment (P > 0.05). On the other hand, patients treated with aligners had significantly lower salivary S. sanguinis counts at all time points than patients treated with fixed appliances (P < 0.05). Finally, almost no L. acidophilus were identified in the collected saliva samples in either of the treated samples. CONCLUSIONS: Within the limitations of this study, there were no differences in the salivary counts of S. mutans or L. acidophilus among adolescent patients treated for 1 month with thermoplastic aligners or self-ligating appliances. On the other hand, patients treated with aligners had lower salivary levels of S. sanguinis compared to those treated with self-ligating appliances.


Assuntos
Aparelhos Ortodônticos Fixos/microbiologia , Aparelhos Ortodônticos Removíveis/microbiologia , Saliva/microbiologia , Adolescente , Carga Bacteriana , Índice CPO , Placa Dentária/microbiologia , Feminino , Gengivite/etiologia , Gengivite/microbiologia , Humanos , Lactobacillus acidophilus , Masculino , Aparelhos Ortodônticos Fixos/efeitos adversos , Aparelhos Ortodônticos Removíveis/efeitos adversos , Índice Periodontal , Estudos Prospectivos , Streptococcus mutans , Streptococcus sanguis
9.
J Contemp Dent Pract ; 19(12): 1558-1564, 2018 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-30713189

RESUMO

AIM: This paper aims to assess the evidence in the literature reporting orthodontically induced inflammatory root resorption (OIIRR) in treatment with orthodontic clear aligners using 3D measurements. MATERIALS AND METHODS: Following preferred reporting Items for systematic reviews (PRISMA) statement, eight electronic databases were searched for relevant published and unpublished records. Data collected according to restricted inclusion and exclusion criteria. RESULTS: A total of 236 articles were identified as relevant to our topic. Duplicates were excluded resulting in 226 papers, out of which 31 papers were relevant after screening titles and abstracts. Only 2 high-level evidence papers out of the 31 met the inclusion criteria for the qualitative synthesis. CONCLUSION: Based on the available studies with high level of evidence in the literature, we conclude that orthodontic clear aligners are non-inferior to light-force fixed orthodontic appliances, and superior to heavy-force fixed orthodontic appliances in terms of the risk for developing apical root resorption. CLINICAL SIGNIFICANCE: Orthodontists can be more assured about the low-risk of OIIRR associated with clear aligners compared to other orthodontic treatment modalities, and it remains up to the practitioner's assessment to select the appropriate treatment on a case by case basis.


Assuntos
Imageamento Tridimensional , Aparelhos Ortodônticos Fixos/efeitos adversos , Aparelhos Ortodônticos Removíveis/efeitos adversos , Reabsorção da Raiz/etiologia , Bases de Dados Bibliográficas , Humanos , Reabsorção da Raiz/diagnóstico por imagem
10.
Cranio ; 36(6): 352-359, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-29115191

RESUMO

OBJECTIVE: To identify potential risk factors of response to oral appliance in patients with obstructive sleep apnea (OSA). METHODS: Fifteen OSA patients were enrolled. Clinical characteristics, cephalometric measurements, and the results of home sleep testing were retrospectively obtained at baseline, and a sleep test was done again at the end of treatment. RESULTS: Twelve subjects were responders and three were non-responders. The diastolic blood pressure, minimum pulse rate, SNA (Angle between sella-nasion and nasion-A point), ANB (Anteroposterior maxilla/mandible discrepancy), and facial convexity of non-responders was higher than those of responders. Unlike AHI, non-responders showed a lower lowest oxygen saturation (%) than responders. DISCUSSION: Elevated diastolic pressure and minimal pulse rate, higher skeletal convexity and lowered lowest oxygen saturation might be risk factors to oral appliance efficacy in the OSA patients. More research in a large sample is needed to verify the results of the current study.


Assuntos
Avanço Mandibular/efeitos adversos , Avanço Mandibular/instrumentação , Aparelhos Ortodônticos Removíveis/efeitos adversos , Apneia Obstrutiva do Sono/terapia , Adulto , Pressão Sanguínea , Cefalometria , Ossos Faciais/patologia , Feminino , Frequência Cardíaca , Humanos , Hipóxia , Masculino , Pessoa de Meia-Idade , Oxigênio/sangue , Estudos Retrospectivos , Fatores de Risco , Resultado do Tratamento , Adulto Jovem
11.
Am J Orthod Dentofacial Orthop ; 152(5): 706-710, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-29103448

RESUMO

INTRODUCTION: The objectives of this study were to examine adverse clinical events after the use of the Invisalign system and to provide an overview of the actions taken by the manufacturer to address these events. METHODS: A retrospective analysis of the Manufacturer and User Facility Device Experience database of the United States Food and Drug Administration was used. All medical device reports reported to the United States Food and Drug Administration pertaining to products of Align Technology from November 1, 2006, to November 30, 2016, were analyzed. Qualitative content analysis was conducted of event descriptions and manufacturer narrative reports. RESULTS: A total of 173 medical device reports were reported in the Manufacturer and User Facility Device Experience database: 169 (97.7%) were designated as adverse event reports, and 45 (26%) were deemed by the treating doctor to be serious or life threatening. The most medical device reports that reported a serious or life-threatening event were in 2014 (50%). The most frequently reported adverse event was difficulty breathing (56 events) followed by sore throat (35 events), swollen throat (34 events), swollen tongue (31 events), hives and itchiness (31 events), anaphylaxis (30 events), swollen lips (27 events), and feeling of throat closing/tight airway/airway obstruction/laryngospasm (24 events). CONCLUSIONS: Serious or life-threatening events could be associated with use of Invisalign systems. Health care providers should be aware of these events and know how to handle them if they arise in their practices.


Assuntos
Aparelhos Ortodônticos Removíveis/efeitos adversos , Vigilância de Produtos Comercializados , Bases de Dados Factuais , Humanos , Desenho de Aparelho Ortodôntico , Estudos Retrospectivos , Estados Unidos , United States Food and Drug Administration
13.
J Contemp Dent Pract ; 18(7): 607-613, 2017 Jul 01.
Artigo em Inglês | MEDLINE | ID: mdl-28713117

RESUMO

BACKGROUND: The sense of smell is very influential in the taste of foods. If the smell pleases us, we anticipate the taste of the food with a great deal of relish. If our sense of smell is impaired, so is our taste. The effect of appliance on taste perceptions has always had a controversial subject. MATERIALS AND METHODS: The present study was designed to analyze the change in taste perception in children using removable orthodontic appliances. All the selected volunteers were given different taste stimuli and were asked to score as per their perception. The verbal score was calculated based on the correct and incorrect taste stimuli given to them. Visual analog scale was used to assess intensity and hedonic (palatability) estimation of the volunteers. RESULTS: The volunteers from both study and control groups scored different values for taste stimuli. The majority of stimuli were estimated correctly by both groups. There was no statistically significant difference between the study and control groups. CONCLUSION: In different testing sessions, the scoring of the volunteers was nearly constant, indicating that an appliance does not play a major role in the alteration of taste stimuli. CLINICAL SIGNIFICANCE: The appliance brings about transient change in taste perception, we should educate the patient before delivering the appliance about the transient change in taste perception and encourage full-time wear of the appliance, including during meals, without fear of affecting taste sensations.


Assuntos
Aparelhos Ortodônticos Removíveis/efeitos adversos , Paladar , Adolescente , Criança , Feminino , Humanos , Masculino , Percepção Gustatória
14.
Stomatologiia (Mosk) ; 96(3): 5-10, 2017.
Artigo em Russo | MEDLINE | ID: mdl-28617398

RESUMO

The aim of the study was to evaluate ultrastructural changes of dental enamel after fixation of orthodontic appliances, initial influence of orthodontic forces and removal of braces. Five intact permanent tooth extracted for orthodontic reasons were included in the experimental study. Scanning probe microscopy was conducted in 4 random enamel points in each tooth (20 points overall) in semi-contact mode with standard 10 nm probes. The study showed ultrastructural enamel changes such as nanofractures up to 1 mm along the braces locks. The changes correlated with surface morphological features and teeth anatomy and may play an important role in dental decay and non-carious lesions occurring in the course of orthodontic treatment.


Assuntos
Esmalte Dentário/ultraestrutura , Aparelhos Ortodônticos Removíveis/efeitos adversos , Braquetes Ortodônticos/efeitos adversos , Adolescente , Adulto , Cárie Dentária/etiologia , Dureza , Humanos , Microscopia de Varredura por Sonda , Modelos Biológicos , Adulto Jovem
15.
Georgian Med News ; (264): 39-43, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-28480847

RESUMO

An orthodontic appliance in the mouth worsens conditions for its self-cleaning, complicates the teeth care and makes an environment favorable to the soft tooth deposit, in turn, leads to the teeth enamel demineralization. In literature, the majority of works are devoted to the study of the microbial landscape with fixed orthodontic treatment. Despite the obvious relevance, the formation problem of opportunistic and pathogenic microorganisms when treating dentoalveolar anomalies with a removable orthodontic appliance remains understudied. The research aim was to investigate the influence of the removable type of orthodontic treatment of patients aged 12 with dentoalveolar anomalies on the mouth microbiocenosis. The dental examination and microbiological study was conducted to 100 children aged 12 with dentoalveolar anomalies. The dental examination included assessment of the oral hygiene state by the OHI-S index. The microbiological research was conducted in the following sequence: the bacterioscopy smear of plaque, stained by the Gram and Burri method with the assessment of morphological and tinctorial properties of microorganisms. The statistical data analysis was performed using SPSS v22.0 forWindows program. The dental examination showed that the oral hygiene state varied according to the orthodontic treatment stage. During the orthodontic treatment the OHI-S Index was 2.1 score, indicating a satisfactory oral hygiene level. The microbiological study showed that persistent contaminants were lactobacilli, streptococci, staphylococci, and yeast-like fungi. However, the treatment showed a decrease of normal flora level and the increase in number of Candidaalbicans, Staphylococcusaureus and Streptococcusmutans, that was a trigger in the development of dental caries and periodontal disease. During the orthodontic treatment, children with dentoalveolar anomalies are at high risk of dental caries and periodontal disease.


Assuntos
Boca/microbiologia , Higiene Bucal , Aparelhos Ortodônticos Removíveis/efeitos adversos , Técnicas Bacteriológicas , Criança , Humanos , Técnicas de Tipagem Micológica
16.
J Contemp Dent Pract ; 18(4): 322-325, 2017 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-28349912

RESUMO

INTRODUCTION: Malocclusion plays an important role in the development of periodontitis. Thus, by treating malocclusion, a good gingival health can be achieved. This study was conducted to establish the correlation between orthodontic tooth movement and periodontitis. MATERIALS AND METHODS: This is a retrospective study conducted on 220 patients who underwent orthodontic treatment for malocclusion. They were divided into two groups: Group I patients were treated with fixed orthodontics, while group II patients received myofunctional appliances. RESULTS: The value for plaque, gingival recession, and tooth mobility significantly increased in group I patients. However, the difference was statistically nonsignificant in group II patients. CONCLUSION: The authors concluded that there is correlation between malocclusion and periodontitis. Malocclusion leads to periodontitis. CLINICAL SIGNIFICANCE: Malocclusion is the main reason for the development of poor periodontal health. Combined effort has to be played by both periodontist and orthodontist for the treatment of various orthodontic-periodontal problems.


Assuntos
Terapia Miofuncional/efeitos adversos , Aparelhos Ortodônticos Removíveis/efeitos adversos , Aparelhos Ortodônticos/efeitos adversos , Periodontite/etiologia , Técnicas de Movimentação Dentária/efeitos adversos , Feminino , Humanos , Masculino , Má Oclusão/complicações , Má Oclusão/terapia , Má Oclusão de Angle Classe I/complicações , Má Oclusão de Angle Classe I/terapia , Má Oclusão de Angle Classe II/complicações , Má Oclusão de Angle Classe II/terapia , Má Oclusão de Angle Classe III/complicações , Má Oclusão de Angle Classe III/terapia , Terapia Miofuncional/instrumentação , Terapia Miofuncional/métodos , Estudos Retrospectivos , Técnicas de Movimentação Dentária/instrumentação , Técnicas de Movimentação Dentária/métodos
17.
J Prosthodont Res ; 61(2): 133-138, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-27561445

RESUMO

PURPOSE: Oral appliances (OAs) are commonly used as a noninvasive treatment for obstructive sleep apnea syndrome (OSAS). These devices are worn during sleep and create mandibular anterior traction to enlarge the upper airway. Continuous use of the device is essential for the success of OA therapy, but some patients stop using the OA for various reasons. The purpose of this research was to investigate complications in OA therapy that might prevent continuous use of these devices. METHODS: The progress of 90 OSAS patients who visited Tokushima University Hospital and underwent OA therapy was investigated with a mailed questionnaire. All patients had been receiving OA therapy for more than 12 months. RESULTS: Forty patients responded to the questionnaire and of these, 22 were not wearing their OA during sleep. The average period before stopping OA therapy was 9.6 months. Answers from 38 patients who were treated with two-piece Herbst®-type oral appliances were analyzed. The main reasons for stopping OA therapy were: (1) it was bothersome to use; and (2) it did not effectively prevent sleep apnea. Comparison of OA complications between current OA users and nonusers revealed significant differences for the items "difficulty sleeping" and "stifling feeling". OA users recorded better scores for sleep quality than nonusers. CONCLUSIONS: The results of this study indicate that patients discontinued OA therapy because the appliance was "bothersome to use" and because it had "little or no effect" rather than because they experienced the typical complications of OA therapy.


Assuntos
Aparelhos Ortodônticos Removíveis/efeitos adversos , Apneia Obstrutiva do Sono/psicologia , Apneia Obstrutiva do Sono/terapia , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Apneia Obstrutiva do Sono/prevenção & controle , Inquéritos e Questionários , Fatores de Tempo
18.
Orthod Fr ; 88(4): 383-389, 2017 12.
Artigo em Francês | MEDLINE | ID: mdl-29315072

RESUMO

INTRODUCTION: The aim of this study was to assess pain generated during orthodontic treatment with aligners in terms of intensity, duration and characteristics. MATERIALS AND METHODS: The sample consisted of 106 patients. Pain was analyzed according to intensity and characteristics using the Saint Antoine Pain Questionnaire (French Mac Gill questionnaire). For statistical analysis, Student tests were performed. RESULTS: 84% of patients experienced low to moderate pain, with a significantly higher intensity in women. Thirty-one per cent of patients consumed analgesics, although no established correlation was observed between intensity of pain and analgesics. For 53% of patients, duration of pain was ≤ 2 days; for 15% of patients, the pain lasted 7 days. Among patients aged ≥ 40 years, duration of pain was significantly lower than in those aged < 40 years. Ten characteristics of pain were selected as described by at least one third of patients. CONCLUSION: Orthodontic treatments with aligners cause mild to moderate pain, which usually lasts 2 to 3 days, but may last 7 days. This pain is described as a sensation of "compression", "twinges", "squeezing", "tightness", "stretching", "cutting", and as being "tiresome", "bothersome", "unpleasant", or even "a nuisance".


Assuntos
Aparelhos Ortodônticos Removíveis/efeitos adversos , Medição da Dor , Dor/etiologia , Adolescente , Adulto , Analgésicos/uso terapêutico , Criança , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Dor/tratamento farmacológico , Estudos Prospectivos , Inquéritos e Questionários , Adulto Jovem
19.
Quintessence Int ; 47(2): 141-5, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26417613

RESUMO

Mandibular repositioning devices (MRDs) increase the patency of the upper airway by repositioning the mandible forward, resulting in displacement of the oropharyngeal tissues preventing upper airway collapsibility. Mandibular anterior repositioning is counteracted by muscle force from the temporalis muscle. A 39-year-old man had an osteolytic lesion with fracture of the coronoid process of the mandible secondary to wearing a MRD for sleep apnea. Continuous stress generated on the coronoid process temporalis muscle resulted in osteolysis and fracture of the coronoid process on the patient's right side, resulting in swelling and limited ability to open his mouth. The patient was managed with intravenous antibiotics to control the osteomyelitis and surgical debridement, with removal of the coronoid process of the mandible. It is unclear why the fracture only occurred on the right side. Pathologic fracture of the coronoid process due to chronic stress and secondary osteomyelitis is a rare severe complication of treatment for obstructive sleep apnea syndrome with a MRD.


Assuntos
Avanço Mandibular/instrumentação , Fraturas Mandibulares/etiologia , Fraturas Mandibulares/terapia , Aparelhos Ortodônticos Removíveis/efeitos adversos , Osteólise/etiologia , Osteólise/terapia , Síndromes da Apneia do Sono/terapia , Adulto , Antibacterianos/uso terapêutico , Desbridamento , Humanos , Masculino , Estresse Mecânico
20.
J Orofac Orthop ; 76(3): 240-50, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25929710

RESUMO

OBJECTIVES: The purpose of this study was to explore the microbiological and periodontal changes occurring in adolescents during 12 months of orthodontic therapy with removable aligners and with fixed appliances. MATERIAL AND METHODS: During the years 2012-2013, 50 teenagers aged 10-18 years with similar initial orthodontic conditions participated in this trial in a university clinic in northern Italy. After receiving professional oral hygiene and instructions on a standardized oral hygiene protocol, the adolescents were randomly assigned to either orthodontic treatment with traditional fixed brackets (n = 25) or to treatment with Invisalign® aligners (n = 25). Subgingival microbiological samples, probing depth (PD), plaque index (PI), and bleeding on probing (BOP) were obtained and documented from the mesiovestibular subgingival sulcus of the upper right first molar and left central incisor at the beginning of treatment and 3, 6, and 12 months later. Compliance with oral hygiene procedures, full mouth plaque score (FMPS), and full mouth bleeding score (FMBS) were assessed at the beginning of treatment and 12 months later. Two sample independent t-tests and the χ(2) test were used to study whether the indices of periodontal health differed in the teenagers due to the experimental conditions. RESULTS: None of the patients was positive for the periodontal anaerobes analyzed. The PI, PD, BOP, FMPS, and FMBS scores were significantly lower and compliance with oral hygiene was significantly higher in the group treated with Invisalign® than in the group treated with fixed brackets. CONCLUSION: Teenagers treated with removable appliances display better compliance with oral hygiene, less plaque, and fewer gingival inflammatory reactions than their peers with fixed appliances.


Assuntos
Infecções Bacterianas/epidemiologia , Saúde Bucal/estatística & dados numéricos , Higiene Bucal/estatística & dados numéricos , Aparelhos Ortodônticos Removíveis/estatística & dados numéricos , Braquetes Ortodônticos/estatística & dados numéricos , Doenças Periodontais/epidemiologia , Adolescente , Infecções Bacterianas/etiologia , Criança , Feminino , Humanos , Incidência , Itália/epidemiologia , Masculino , Aparelhos Ortodônticos Removíveis/efeitos adversos , Braquetes Ortodônticos/efeitos adversos , Cooperação do Paciente/estatística & dados numéricos , Doenças Periodontais/diagnóstico , Doenças Periodontais/etiologia , Índice Periodontal , Gravidez , Fatores de Risco , Resultado do Tratamento
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