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1.
Spec Care Dentist ; 2020 Nov 06.
Artigo em Inglês | MEDLINE | ID: mdl-33156573

RESUMO

AIM: To study the dental and periodontal status of women with breast cancer (BCa) having tamoxifen or aromatase inhibitors (AIs) treatment in comparison with control healthy women. METHODS: Fifty-one women on tamoxifen therapy, 52 women on AIs therapy and 52 systemically healthy controls were included in the study. The total number of teeth, the number of teeth indicated for extraction, the number of decayed teeth, and the duration of medication were recorded. Periodontal status was evaluated with gingival index (GI); plaque index (PI); bleeding on probing (BOP); probing depth (PD) and clinical attachment loss (CAL). RESULTS: The lowest number of teeth and decayed teeth was found in AIs users (P < .001 and P = .003 respectively). The highest CAL value was seen in AIs users (P = .042) whereas no significant difference was found between the groups in terms of PI, GI, and PD (P = .102, P = .233, and P = .306, respectively). Lower PI was observed in patients using AIs for less than 2 years (P = .048). CONCLUSIONS: While tamoxifen did not affect the dental and periodontal condition, AIs medication adversely affected the dental and periodontal condition by more tooth loss and higher CAL.

2.
Rev Port Cardiol ; 2020 Nov 21.
Artigo em Inglês, Português | MEDLINE | ID: mdl-33234353

RESUMO

OBJECTIVES: This study aims to assess the thickness of epicardial fat tissue (EFT), a sign of cardiovascular risk, using echocardiography in patients with severe periodontitis. METHODS: Thirty-three patients with stage III or IV periodontitis and 33 healthy participants were enrolled into the study. Epicardial fat tissue thickness was measured perpendicularly via echocardiography of the free wall of the right ventricular at end-diastole in three cardiac cycles. Body mass index (BMI) was calculated by dividing weight in kilograms by the height in meters squared. EFT to BMI ratio (EFT/BMI) was measured by dividing EFT by the BMI. RESULTS: There was no significant difference between study patients and the control group as regards to the frequency of diabetes, hypertension, smoking, and hyperlipidemia. The EFT and EFT/ BMI ratio were significantly different in the control and periodontitis groups (0.51±0.17 vs. 0.77±0.16, respectively; p ≤0.001) (0.021±0.008 vs. 0.030±0.006, respectively; p≤0.001). Pearson's correlation coefficient demonstrated a significant relationship between EFT and the clinical parameters of periodontitis (p<0.001) CONCLUSIONS: EFT thickness measured by echocardiography appears to be associated with severe periodontitis and may thus be an indirect sign of cardiovascular disease in periodontitis patients.

3.
Int J Implant Dent ; 6(1): 73, 2020 Nov 25.
Artigo em Inglês | MEDLINE | ID: mdl-33236168

RESUMO

BACKGROUND: The aim of this paper is to explore the serum biochemical parameters also known as risk markers for cardiovascular system, in individuals who have received dental implant treatment, and to reveal risk factors for peri-implant diseases. METHODS: The study included 58 subjects with peri-implantitis, 49 subjects with peri-implant mucositis, and 49 healthy subjects. All the subjects were assessed in terms of both peri-implant clinical parameters-probing depth (PD), bleeding on probing (BOP), the type of prosthesis, gingival index (GI), keratinized mucosa width (KMW), and plaque index (PI)-and serum biochemical parameters (e.g., LDL cholesterol, HDL cholesterol, triglyceride, total cholesterol, vitamin D, uric acid, white blood cell (WBC), neutrophil, hemoglobin (Hb), and platelet counts). RESULTS: KMW was the lowest in the peri-implantitis group. Compared with the other groups, the peri-implantitis group showed significantly higher levels of triglyceride, uric acid, and WBC. The peri-implantitis group had the lowest level of vitamin D. Triglyceride and uric acid levels had positive correlations with peri-implant clinical parameters. CONCLUSION: High levels of triglyceride and uric acid may pose a risk for both peri-implant diseases and cardiovascular diseases. Prior to dental implant surgery, patients' serum biochemical parameters should be checked.

4.
Curr Med Imaging ; 16(7): 913-920, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33059561

RESUMO

BACKGROUND: Alveolar bone height in the posterior maxillary region is very important and critical for dental implant planning and placement. OBJECTIVES: This study aimed to evaluate the anatomy of the maxillary sinus floor in relation to the alveolar crest and to determine variations in the vertical measurements between the maxillary sinus floor and the alveolar bone crest tip in the posterior edentulous maxilla with the use of cone beam computerized tomography. METHODS: This analysis enrolled 234 retrospectively selected patients (123 males with mean age 52.95±11.74 (range 32-76 years) and 111 females with mean age 58.14±11.92 (range 32-75 years)) with edentulous posterior maxillary regions. The maxillary sinus floor was divided into three anatomical segments (anterior, median and posterior) in relation to the transverse palatine suture. The measurements were performed on 3D surface rendered volumetric images by using rotation and translation of the views. Landmarks for measurement were specified by using a cursor driven pointer. Vertical lines were marked on the cross-sectional images between the alveolar ridge and the deepest point of the maxillary sinus floor for each of the three regions. P < 0.05 was regarded as statistically significant. RESULTS: The mean distance values between the sinus floor and the alveolar crest in the anterior, median and posterior regions were 8.74±3.97 mm, 5.37±3.23 mm and 7.06±3.28 mm, respectively. Measurements in the anterior region were found to be high in both total and gender groups compared to other regions. Also, subsinus alveolar bone heights decreased with increasing age in both genders in all three regions. CONCLUSION: This study emphasizes that the mean subsinus alveolar bone height is highest in the anterior segment of the edentulous posterior maxilla. These results may guide clinicians to make the decision of implant placement area and lead to less invasive alternative surgery methods for edentulous posterior segments.

5.
Oral Dis ; 2020 Sep 29.
Artigo em Inglês | MEDLINE | ID: mdl-32991012

RESUMO

OBJECTIVE: The purpose of this study was to evaluate the occurrence rate of drug-induced gingival overgrowth (DIGO) in patients treated with angiotensin-converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs), and calcium channel blockers (CCBs) such as amlodipine, lercanidipine, and benidipine, as well as to assess the relationship of those mentioned above with medication variables and oral hygiene. METHODS: Sociodemographic details, DIGO, and clinical periodontal parameters were obtained from one hundred and thirty-one patients receiving ACE inhibitors, ARBs, and CCBs for a period of at least 2 years. RESULTS: The occurrence rate of DIGO was 19.6% in patients using CCB, 12.5% in the ARB group, and 7.5% in the ACE inhibitor group. In a subgroup analysis of CCBs, DIGO was found to be 31.8% in the amlodipine group, 13.3% in the lercanidipine group, and 7.1% in the benidipine group. While there was a significant relationship between amlodipine drug dosage and DIGO, no association was found between the duration of therapy and DIGO in all CCB subgroups. CONCLUSION: There was no difference between the groups in terms of DIGO. Duration of therapy and drug dosage did not affect the severity of DIGO in both ACE inhibitors and ARB groups.

6.
Int J Periodontics Restorative Dent ; 40(4): e179-e187, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32559046

RESUMO

The aim of this study was to test the nano-hydroxyapatite powder decontamination method on intraorally contaminated titanium discs and to compare this method with current decontamination methods in the treatment of peri-implantitis. Contaminated discs were assigned to six treatment groups (n = 10 each): titanium hand curette; ultrasonic scaler with a plastic tip (appropriate for titanium); ultrasonic scaler with a plastic tip (appropriate for titanium) + H2O2; short-term airflow system (nano-hydroxyapatite airborne-particle abrasion for 30 seconds); long-term airflow system (nano-hydroxyapatite airborne-particle abrasion for 120 seconds); Er:YAG laser (120 mJ/pulse at 10 Hz). There were also two control groups (n = 10 each): contaminated disc (negative control) and sterile disc (positive control). Scanning electron microscopy, energy-dispersive x-ray spectroscopy, and dynamic contact angle analysis were used to determine the most effective surface-treatment method. The highest percentage of carbon (C) atoms was observed in the negative control group, and the lowest percentage of C atoms was found in the long-term airflow group, followed by the short-term airflow, laser, ultrasonic + H2O2, ultrasonic, and mechanical groups. When the groups were examined for wettability, the lowest contact angle degree was observed in the long-term airflow, short-term airflow, and laser groups. Nano-hydroxyapatite and laser treatments for detoxifying and improving infected titanium surfaces may show the most suitable results for reosseointegration.


Assuntos
Implantes Dentários , Titânio , Durapatita , Peróxido de Hidrogênio , Microscopia Eletrônica de Varredura , Propriedades de Superfície
7.
Clin Oral Investig ; 24(6): 2121-2127, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32430775

RESUMO

OBJECTIVES: The aim of this split-mouth, prospective controlled study was to compare the effects of two different interdental devices on clinical plaque elimination, gingival bleeding and patient acceptance and comfort. MATERIALS AND METHODS: Thirty participants who had been diagnosed with gingivitis were included in the study. After professional oral prophylaxis and a 3-day washout period, patients were advised to use two test devices (TePe Interdental Brushes Original and TePe EasyPick™, Malmö, Sweden) according to instructions. The plaque index (Turesky modification of the Quigley and Hein Index) and bleeding index (Papillary Bleeding Index) were recorded at baseline and after 2 weeks. Patient satisfaction and comfort were assessed with a questionnaire. RESULTS: Both of the tested devices improved the plaque and bleeding index scores. There were no differences between the two sides in terms of time-dependent changes. The patients felt more satisfied with the cleansing capacity and more comfortable with the use of SCIP compared with IDB (p = 0.001). Pain sensation with the use of SCIP was significantly lower than with IDB (p = 0.002). CONCLUSION: The clinical efficiency of the tested interdental devices was similar in terms of removing plaque and decreasing bleeding. However, SCIP were found to be more comfortable and preferable to IDB. CLINICAL RELEVANCE: The silicone coated interdental picks showed similar effects on plaque removal as interdental brushes and superiority in terms of ease to use than interdental brushes.


Assuntos
Dispositivos para o Cuidado Bucal Domiciliar , Gengivite , Silicones , Índice de Placa Dentária , Gengivite/prevenção & controle , Humanos , Aceitação pelo Paciente de Cuidados de Saúde , Estudos Prospectivos , Método Simples-Cego , Suécia , Escovação Dentária , Resultado do Tratamento
8.
Rev Assoc Med Bras (1992) ; 66(2): 133-138, 2020 May 15.
Artigo em Inglês | MEDLINE | ID: mdl-32428146

RESUMO

OBJECTIVE: Periodontitis may stimulate infectious and immune response and cause the development of atherogenesis, coronary heart disease, and myocardial infarction. The aim of this study was to compare the plateletcrit (PCT) and mean platelet volume (MPV) levels derived from complete blood count (CBC) tests in patients suffering from stage 3 periodontitis with those of healthy individuals without periodontal disease. METHODS: The study included 57 patients (28 females and 29 males) with Stage 3 Periodontitis and 57 volunteering individuals (31 females and 26 males) who were periodontally healthy. The age of study participants ranged from 18 to 50 years. Their periodontal condition was investigated with probing depth (PD), clinical attachment level, bleeding on probing, and plaque index. Leukocyte (WBC) and erythrocyte count (RBC), hemoglobin (Hb) and hematocrit (HCT) levels, mean corpuscular volume (MCV) and red cell distribution width (RDW), thrombocyte count, mean platelet volume (MPV), plateletcrit (PCT ), and neutrophil and lymphocyte counts were evaluated based on the CBC test results of the study participants. RESULTS: PCT, WBC, Neutrophil, and MPV values were found to be significantly higher in the periodontitis group (p<0.05). There were no significant differences in RBC counts, Hb, HCT, MCV, RDW, and platelet and lymphocyte counts between the two study groups (p>0.05). CONCLUSIONS: PCT and MPV levels may be a more useful marker to determine an increased thrombotic state and inflammatory response in periodontal diseases.


Assuntos
Plaquetas/citologia , Volume Plaquetário Médio , Periodontite/sangue , Adolescente , Adulto , Contagem de Células Sanguíneas , Estudos de Casos e Controles , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Índice Periodontal , Valores de Referência , Estatísticas não Paramétricas , Adulto Jovem
9.
Aging Male ; : 1-10, 2020 Apr 11.
Artigo em Inglês | MEDLINE | ID: mdl-32281459

RESUMO

Objective: To assess the prevalence of comorbidities and periodontal diseases severity in dental patients and to determine the socio-demographic, behavioral, and comorbidity-related predictors of periodontal diseases severity.Material and methods: This retrospective study sample consisted of 2458 patients who referred to faculty dentistry clinic. Socio-demographic, behavioral, and comorbidity characteristics of study participants were collected using hospital database and self-reported questionnaire. Descriptive, bivariate, and multivariate analyses were used to analyze study data.Results: Of these patients, 55.2% had mild-to-moderate periodontitis and 44.8% had severe periodontitis. The severity of periodontal disease was significantly associated with the presence of comorbidity, the number of comorbidities, age, gender, income level, smoking, and alcohol consumption. Patients with severe periodontitis were more likely being a current smoker, to report drinking alcohol sometimes or every day, to be a male, to have a pulmonary disease, to have an endocrinological and metabolic disorder, to have a cardiovascular disorder and to have a neurological disorder than those with mild/moderate periodontitis. Having a hematological disorder, having a muscle, skeletal and connective tissue disorder, to be a current smoker and lower age were found to be predictors of moderate periodontitis whereas being a female and lower number of comorbidities were predictors of mild periodontitis.Conclusions: The severity of periodontitis was associated with socio-demographic, behavioral, and comorbidity characteristics of periodontal patients.

10.
J Oral Maxillofac Surg ; 78(7): 1112-1123, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32192925

RESUMO

PURPOSE: The health of peri-implant tissues is associated with the peri-implant soft tissue thickness (STT) and keratinized tissue width (KTW). Resorptive changes in the crestal bone around implant sites will be affected by the STT. The present randomized prospective study compared the effectiveness of titanium-prepared platelet-rich fibrin (T-PRF) with that of connective tissue graft (CTG) on peri-implant STT, KMW, and crestal bone level. PATIENTS AND METHODS: Through simultaneous augmentation of the soft tissue using T-PRF or CTG, 30 implants were placed in 30 patients. The implants were placed in thin, soft tissue areas and thickened simultaneously with a T-PRF membrane in the test group and a CTG in the control group. During surgery (T0) and at 3 months postoperatively (T1), the KTW and peri-implant STT were measured at 3 points: occlusal part of the alveolar crest (OAC), midbuccal mucosa level (MBML), and 1 mm above the mucogingival junction (MGJ1). The crestal bone changes were evaluated from a periapical radiograph at 3 months postoperatively. RESULTS: The baseline STT and KTW measurements showed no significant differences between the 2 groups (P < .05). Comparison of the T0 and T1 measurements from the 2 groups showed a significant increase in KTW and STT (P < .001). Compared with the test group, the control group showed a highly significant increase in the peri-implant STT at the MBML, MGJ1, and KTW levels (P < .05). No significant difference was found between the 2 groups in terms of the OAC changes (P > .05). No crestal bone loss was observed in any of the dental implants. CONCLUSIONS: Both groups experienced a greater increase in peri-implant STT at the OAC level, and T-PRF can be considered as an autogenous alternative to CTG. Also, peri-implant STT might prevent crestal bone resorption in the osseointegration period.


Assuntos
Implantes Dentários , Fibrina Rica em Plaquetas , Tecido Conjuntivo , Implantação Dentária Endo-Óssea , Humanos , Membrana Mucosa , Estudos Prospectivos , Titânio
11.
Rev. Assoc. Med. Bras. (1992) ; 66(2): 133-138, Feb. 2020. tab, graf
Artigo em Inglês | LILACS-Express | LILACS, Sec. Est. Saúde SP | ID: biblio-1136183

RESUMO

SUMMARY OBJECTIVE Periodontitis may stimulate infectious and immune response and cause the development of atherogenesis, coronary heart disease, and myocardial infarction. The aim of this study was to compare the plateletcrit (PCT) and mean platelet volume (MPV) levels derived from complete blood count (CBC) tests in patients suffering from stage 3 periodontitis with those of healthy individuals without periodontal disease. METHODS The study included 57 patients (28 females and 29 males) with Stage 3 Periodontitis and 57 volunteering individuals (31 females and 26 males) who were periodontally healthy. The age of study participants ranged from 18 to 50 years. Their periodontal condition was investigated with probing depth (PD), clinical attachment level, bleeding on probing, and plaque index. Leukocyte (WBC) and erythrocyte count (RBC), hemoglobin (Hb) and hematocrit (HCT) levels, mean corpuscular volume (MCV) and red cell distribution width (RDW), thrombocyte count, mean platelet volume (MPV), plateletcrit (PCT ), and neutrophil and lymphocyte counts were evaluated based on the CBC test results of the study participants. RESULTS PCT, WBC, Neutrophil, and MPV values were found to be significantly higher in the periodontitis group (p<0.05). There were no significant differences in RBC counts, Hb, HCT, MCV, RDW, and platelet and lymphocyte counts between the two study groups (p>0.05). CONCLUSIONS PCT and MPV levels may be a more useful marker to determine an increased thrombotic state and inflammatory response in periodontal diseases.


RESUMO OBJETIVO A periodontite pode estimular a resposta infecciosa e imunitária e causar o desenvolvimento da aterogênese, doença coronária e infarto do miocárdio. O objetivo deste estudo foi comparar os níveis de plaquetócrito (PCT) e de volume médio de plaquetas (VMP) derivados dos testes de hemograma completo (CBC) em doentes que sofrem de periodontite de fase 3 com os de indivíduos saudáveis, sem doença periodontal. MÉTODOS O estudo incluiu 57 doentes (28 mulheres e 29 homens) com periodontite de fase 3 e 57 voluntários (31 mulheres e 26 homens) que eram periodontalmente saudáveis. A idade dos participantes do estudo variou de 18 a 50 anos. A condição periodontal dos participantes do estudo foi investigada com profundidade de sonda (PD), nível de ligação clínica, hemorragia na sonda e índice de placas. Contagem de leucócitos (WBC) e eritrócitos (RBC), níveis de hemoglobina (Hb) e hematócrito (HCT), volume corpuscular médio (VCM) e largura de distribuição das células vermelhas (RDW), contagem de trombócitos, volume plaquetário médio (MPV), plaquetócrito (PCT) e contagem de neutrófilos e linfócitos foram avaliados com base nos resultados do teste CBC dos participantes do estudo. RESULTADO Verificou-se que os valores de PCT, WBC, neutrófilos e MPV eram significativamente mais elevados no grupo da periodontite (p<0,05). Não houve diferenças significativas nas contagens de glóbulos vermelhos, Hb, HCT, MCV, RDW; nem nas contagens de plaquetas e linfócitos entre os dois grupos estudados (p>0, 05). CONCLUSÃO Os níveis de PCT e MPV podem ser um marcador mais útil para determinar um estado trombótico aumentado e a resposta inflamatória em doenças periodontais.

12.
Artigo em Inglês | MEDLINE | ID: mdl-31628073

RESUMO

OBJECTIVE: We quantitatively compared the signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR) in T1 weighted imaging (WI) and T2 WI sequences in 3 Tesla (T) magnetic resonance imaging (MRI) using zirconium, titanium (grades 4 and 5), and titanium-zirconium alloy implants to evaluate the effect of implant type and imaging sequence. STUDY DESIGN: MRI was acquired using a 3 T magnet with a 16-channel head coil. Implants of each type were mounted in gel and scanned in axial, coronal, and sagittal planes using fast spin echo sequences in T1 WI (TR = 600, TE = 12 milliseconds) and T2 WI (TR = 3000, TE = 80 milliseconds) sequences. Data were transferred to Synapse 3-D software, and images were measured twice by an oral and maxillofacial radiologist blinded to the type of implants. RESULTS: Zirconium implants resulted in the lowest SNR and CNR values (P < .05). No significant differences were identified between titanium (grades 4 and 5) and titanium-zirconium implants. The T2 WI sequence had a significantly higher SNR and CNR than T1 WI. There was no difference in intraobserver agreement between T1 WI and T2 WI. CONCLUSIONS: CNR and SNR at 3 T MRI are dependent on implant type and imaging sequence. Titanium (grades 4 and 5) and titanium-zirconium implants and the T2 WI sequence produced higher SNR and CNR values.


Assuntos
Implantes Dentários , Titânio , Ligas , Imagem por Ressonância Magnética , Razão Sinal-Ruído , Zircônio
13.
Dentomaxillofac Radiol ; 48(8): 20190139, 2019 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-31386553

RESUMO

OBJECTIVES: To assess the contrast-to-noise ratio (CNR) of four different types of dental implant materials in CT and cone beam CT (CBCT) images with varying scan settings. METHODS: Four different types of implants: zirconium (Zr), titanium (Ti) Grade 4 and 5 and titanium-zirconium (Ti-ZrO2) alloy were placed in a 3% gelatin phantom in a cylindrical plastic container and scanned with two different CT machines (GE Medical systems and Toshiba Medical Systems) and one CBCT machine (I-CAT, Imaging Sciences International) with different voxel sizes of 0.2, 0.25, 0.3 and 0.4 mm. Images were analyzed using ImageJ software with the purpose of estimating the CNR. RESULTS: The CNR obtained from images acquired with CT was lower than the CBCT with all voxel sizes tested. 0.3 and 0.4 mm voxel sizes exhibited the highest CNR (p < 0.05) that gives the best image quality. Among the implant materials tested, titanium Grade 5 has the highest levels of CNR while Zirconium has the lowest (p < 0.05). CONCLUSIONS: The optimum protocol for radiographic follow-up in areas near implants on the I-CAT is low-resolution settings (0.3 and 0.4 mm voxel sizes) which gave the highest CNR thus image quality. In presence of Zr implants, an alternative imaging modality (i.e., MRI) may be considered to avoid low-quality images.


Assuntos
Implantes Dentários , Tomografia Computadorizada de Feixe Cônico Espiral , Zircônio , Tomografia Computadorizada de Feixe Cônico , Humanos , Imagens de Fantasmas
14.
Int J Dent Hyg ; 17(4): 343-349, 2019 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-31125483

RESUMO

OBJECTIVES: To investigate the effect of generalized aggressive periodontitis (GAP), generalized chronic periodontitis (GCP) and gingivitis (G) on oral health-related quality of life (OHRQoL) with Oral Health Impact Profile-14 (OHIP-14) and Short Form-36 (SF-36) questionnaires. METHODS: One hundred GAP patients, 114 GCP and 109 G patients were included in the study. Age, gender, number of missing teeth, probing depth (PD), bleeding on probing (BOP), plaque index (PI) and clinical attachment level (CAL) of patients were recorded. The Turkish versions of OHIP-14 and SF-36 questionnaires were filled before any medication and dental treatment were approved. The one-way ANOVA test was used to compare three groups. RESULTS: Generalized aggressive periodontitis and GCP groups were similar to each other (P > 0.05) in most subscales except functional limitation and social disability of the OHIP-14 questionnaire (P = 0.034 and P = 0.018, respectively); conversely, there was no statistically difference between GAP and G groups in functional limitation and social disability subscales (P = 0.856 and P = 0.242, respectively). GAP group gave higher scores than GCP group in all subscales of SF-36 (P < 0.05). There was a negative correlation between OHIP-14 and SF-36 subscale scores in all groups. CONCLUSION: Study findings indicate that different forms of periodontal disease have different effects on quality of life of patients when measured by OHIP-14 and SF-36. Patients with GCP and GAP had poorer OHRQoL than G patients.


Assuntos
Periodontite Crônica , Qualidade de Vida , Estudos Transversais , Humanos , Saúde Bucal , Inquéritos e Questionários
15.
Artigo em Inglês | MEDLINE | ID: mdl-30879914

RESUMO

OBJECTIVE: The aim of this study was to assess artifacts generated by zirconium, titanium, and titanium-zirconium alloy implants on magnetic resonance imaging(MRI), computed tomography(CT), and cone beam computed tomography(CBCT) and to correlate the findings to the dose-area product and exposure factors on CT and CBCT. STUDY DESIGN: Three phantoms were built by embedding zirconium, titanium, and titanium-zirconium implants in ultrasound gel. MRI, CT, and CBCT images were acquired by using multiple sequences and settings. For MRI, "artifact" was described as the length of signal void beyond the limits of the implant. For CT and CBCT, "artifact" was calculated by subtracting the gray level of the darkest pixel from the level of the lightest pixel. RESULTS: On MRI, zirconium implants had minor distortion artifacts, whereas titanium and titanium-zirconium implants created extensive artifacts (P < .05). On CT and CBCT, artifacts were less prominent with titanium and titanium-zirconium implants compared with zirconium (P < .05). Titanium grade 5 implants with 0.3 and 0.4 mm3 voxels produced the least severe artifacts. CONCLUSIONS: MRI images were less affected by artifacts from zirconium implants, whereas CT and CBCT images showed less severe artifacts from titanium and titanium-zirconium alloy implants. CT generated greater artifacts compared with CBCT. Larger CBCT voxel sizes reduced the dose-area product and the severity of artifacts.


Assuntos
Implantes Dentários , Ligas , Artefatos , Tomografia Computadorizada de Feixe Cônico , Imagem por Ressonância Magnética , Imagens de Fantasmas , Titânio , Zircônio
16.
J Craniofac Surg ; 29(3): 683-687, 2018 May.
Artigo em Inglês | MEDLINE | ID: mdl-29419587

RESUMO

OBJECTIVE: Nasal septum deviation (NSD) is an anomaly that disturbs normal mucus drainage in sinuses, leading to recurrent sinusitis. Sinusitis, infections, and mucosal irritations are the potential causes of Schneiderian membrane thickening (SMT). The aim of this study was to evaluate the characteristics and association between NSD and SMT along with factors such as age, gender, and tooth groups using cone-beam computed tomography (CBCT) imaging. METHODS: The maxillary sinus and nasal cavity of 249 patients (136 females and 113 males) were examined retrospectively using CBCT. The statistical analysis was performed to determine the association between SMT, NSD, gender, and age. RESULTS: No statistically significant relation was detected between NSD and SMT. The NSD was found in 50.6% of patients without gender predilection. Age was not associated with the presence of NSD. The mean thickness of the membrane was least in the third molar region and highest in the first molar region. The average SMT was found to be higher in males for all the examined tooth areas (P ≤ 0.05). CONCLUSION: A retrospective evaluation of CBCT images emphasized the concept that NSD was not a factor that affected the thickening of maxillary sinus mucosa. The CBCT imaging could be used for evaluating the maxillary sinuses and nasal septum.


Assuntos
Mucosa Nasal , Septo Nasal , Doenças Nasais , Tomografia Computadorizada de Feixe Cônico , Feminino , Humanos , Masculino , Mucosa Nasal/diagnóstico por imagem , Mucosa Nasal/patologia , Septo Nasal/diagnóstico por imagem , Septo Nasal/patologia , Doenças Nasais/diagnóstico por imagem , Doenças Nasais/epidemiologia , Doenças Nasais/patologia , Estudos Retrospectivos
17.
Med. oral patol. oral cir. bucal (Internet) ; 23(1): e105-e111, ene. 2018. ilus, tab
Artigo em Inglês | IBECS | ID: ibc-170312

RESUMO

Background: To identify a correlation between the submandibular fossa (SF) visibility and mandibular canal (MC) cortication on panoramic image and the depth of SF measured on CBCT and also correlation between the depth of SF and vertical and horizontal location of MC on CBCT. Material and Methods: 500 CBCT scans and panoramic radiographs were evaluated. SF depth types were classified as type I (< 2mm); type II (2-3mm) and type III (> 3mm) on CBCT. Visibility of SF and the cortication of MC on panoramic radiographs were compared with the depth of SF on CBCT. Distances between MC and mandibular inferior, buccal and lingual cortices were measured. Results: No statistically significant correlation was found between radiolucent appearances of SF, cortication of MC, and depth of SF. The deepest part of the fossa was in the second molar area followed by third and first molars. Negative weak correlations were found between B-MC, L-MC distances and depth of SF. Conclusions: Visibility of SF and cortication of MC on panoramic radiographs did not correlate with the depth of SF. A marked radiolucent submandibular fossa on panoramic image does not undoubtedly indicate a deep fossa, which emphasizes the importance of 3-D imaging in implant planning (AU)


No disponible


Assuntos
Humanos , Masculino , Feminino , Criança , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Mandíbula/diagnóstico por imagem , Radiografia Panorâmica/instrumentação , Implantação Dentária/métodos , Complicações Intraoperatórias/diagnóstico por imagem , Nervo Mandibular/diagnóstico por imagem , Glândula Submandibular/diagnóstico por imagem , Radiografia Panorâmica/métodos , Radiografia Panorâmica
18.
Photomed Laser Surg ; 35(4): 223-230, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28092488

RESUMO

OBJECTIVE: The aim of this study was to determine the effects of low-level laser therapy (LLLT) on wound healing at free gingival graft (FGG) donor sites. MATERIALS AND METHODS: Forty patients requiring FGG were selected for this randomized, controlled, and double-blinded prospective clinical trial. The FGG donor sites were treated with LLLT and compared with an untreated control group. The Wound-Healing Index (WHI), tissue consistency, color match, and H2O2 bubbling test for the evaluation of complete wound epithelialization were recorded on the 3rd, 7th, 14th and 21st days. The pain-burning level, number of analgesics, and bleeding were recorded for 7 days. Donor area soft tissue thickness (TT) was measured at baseline and at the first month. RESULTS: The prevalence of Complete Wound Epithelization was higher in the LLLT group than in the control group on the 14th day (p < 0.001). The bleeding was lower in the test group than in the control group during the first 2 days (p ≤ 0.001). Higher WHI Scores were observed in the test group relative to the control group at all visits (p ≤ 0.001). Color match scores were higher in the test group than in the control group at the first 3 visits (p < 0.05). The TT changed from 4.62 ± 0.79 to 4.71 ± 0.82 mm in the LLLT group and from 4.23 ± 0.62 to 4.01 ± 0.68 mm in the control group. CONCLUSIONS: It can be concluded that LLLT enhances FGG donor site wound healing and preserves TT at palatinal donor sites.


Assuntos
Retalhos de Tecido Biológico/transplante , Gengiva/transplante , Terapia com Luz de Baixa Intensidade/métodos , Sítio Doador de Transplante/efeitos da radiação , Cicatrização/efeitos da radiação , Adulto , Cicatriz/prevenção & controle , Feminino , Gengiva/cirurgia , Humanos , Masculino , Estudos Prospectivos , Valores de Referência , Estatísticas não Paramétricas , Transplante Autólogo/métodos , Cicatrização/fisiologia
19.
Acta Odontol Scand ; 74(7): 558-564, 2016 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-27538770

RESUMO

OBJECTIVE: We aimed to determine the clinical effects of titanium-prepared, platelet-rich fibrin (T-PRF) on human palatal mucosal wound healing (PMWH) and to identify its effect on time-dependent changes in palatal soft-tissue thickness (PSTT) in terms of histoconduction, which is a new concept. MATERIALS AND METHODS: Free gingival graft (FGG) donor sites were treated with T-PRF and compared with an untreated control group. The results of colour match and H2O2-bubbling tests for complete wound epithelization (CWE) were recorded on days 3, 7, 14 and 21. Pain level, number of analgesics used and bleeding status were recorded for the first 7 days. PSTT was measured at baseline and after 1 and 6 months. RESULTS: Colour match scores of the test group were significantly higher than those of the control group at 7 and 14 days. CWE was observed at a higher frequency in the test group than in the control group on day 14. Post-operative bleeding prevalence was lower in the test group than in the control group for the first 2 days. A time-dependent decrease in PSTT was observed at 1 and 6 months in the control group compared with baseline (baseline, 4.23 ± 0.62 mm; 1 month, 4.01 ± 0.68 mm; and 6 months, 3.93 ± 0.69 mm). However, no significant difference was found in the test group (baseline, 4.29 ± 0.64 mm; 1 month, 4.61 ± 0.51 mm; and 6 months, 4.51 ± 0.58 mm). CONCLUSION: The T-PRF membrane exhibited positive effects on PMWH. T-PRF, which is a promising autogenous matrix for histoconduction, may also be preferred as an autogenous alternative to connective tissue grafts in the treatment of gingival recessions and peri-implant mucosal recessions.


Assuntos
Materiais Biocompatíveis/química , Plaquetas/fisiologia , Fibrina/uso terapêutico , Gengiva/transplante , Titânio/química , Sítio Doador de Transplante/patologia , Analgésicos/uso terapêutico , Cor , Tecido Conjuntivo/efeitos dos fármacos , Tecido Conjuntivo/patologia , Tecido Conjuntivo/transplante , Seguimentos , Gengiva/efeitos dos fármacos , Gengiva/patologia , Retração Gengival/cirurgia , Humanos , Peróxido de Hidrogênio/administração & dosagem , Hemorragia Bucal/classificação , Oxidantes/administração & dosagem , Medição da Dor/métodos , Dor Pós-Operatória/prevenção & controle , Palato/cirurgia , Hemorragia Pós-Operatória/classificação , Estudos Prospectivos , Reepitelização/efeitos dos fármacos , Cicatrização/efeitos dos fármacos
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