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1.
Artículo en Inglés | MEDLINE | ID: mdl-32722202

RESUMEN

Containment measures adopted to reduce the spread of coronavirus disease 2019 (COVID-19) have produced a general perception of job insecurity. Dentists have been highly affected by such measures, as they represent an easy source of contagion. As perceived job insecurity is associated with psychological distress and Italian dentists have been highly affected by the COVID-19 outbreak in terms of potential financial loss and the risk of being infected, this study aimed at assessing whether the fear of COVID-19 moderated the effect of perceived job insecurity on depressive symptoms. This cross-sectional online study has included 735 Italian dentists recruited during the lockdown and ranging in age from 27 to 70 years old (495 men and 240 women). A quantile regression model with an inference based on the median and with an interaction term between the fear of COVID-19 and perceived job insecurity has been used to estimate the hypothesized associations. The results indicated that both perceived job insecurity and fear of COVID-19 were positively associated with depressive symptoms, and that the effect of perceived job insecurity on depressive symptoms was weaker among those with a low fear of COVID-19. The findings may inform public health policies for dentists in relation to reducing the risk of developing negative mental health outcomes.


Asunto(s)
Betacoronavirus/aislamiento & purificación , Infecciones por Coronavirus/psicología , Odontólogos/psicología , Depresión/psicología , Empleo/psicología , Miedo , Neumonía Viral/psicología , Adulto , Anciano , Infecciones por Coronavirus/epidemiología , Infecciones por Coronavirus/virología , Estudios Transversales , Brotes de Enfermedades , Femenino , Humanos , Italia/epidemiología , Masculino , Persona de Mediana Edad , Pandemias , Neumonía Viral/epidemiología , Neumonía Viral/virología
2.
J Oral Maxillofac Surg ; 78(9): 1572-1582, 2020 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-32442425

RESUMEN

PURPOSE: Localized amyloidosis of the tongue is a benign condition in which surgical management may be considered. The aim of the study was to review the current literature and report a case. MATERIALS AND METHODS: We searched the PubMed database for all relevant articles reporting cases of localized tongue amyloidosis published between 1980 and February 2020. In addition, we updated 1 case diagnosed and treated in our department. RESULTS: A 49-year-old male patient presented with an asymptomatic tongue nodule of the dorsum mimicking median rhomboid glossitis. The results of an incisional biopsy showed an amyloid on Congo red staining and positive findings for the κ light chain by immunohistochemical analysis. The findings of the systemic workup were negative. Therefore, a diagnosis of localized κ light-chain amyloidosis was made. The patient underwent a resection of the lesion, and no recurrence or progression was observed during a period of 18 months. The literature review showed 12 reports describing 21 patients (11 men, 52.3%) with localized tongue amyloidosis. The most common clinical presentation was nodular with a single lesion of the tongue dorsum (15 patients, 71.4%). All cases showed positive findings on Congo red staining. Immunohistochemical analysis findings were available for only 9 patients (42.8%) and showed light-chain amyloidosis. No case showed any systemic involvement or the development of systemic disease. Surgical excision was performed in 9 cases, with recurrence at the site of operation in 2 cases. CONCLUSIONS: Localized amyloidosis of the tongue is a rare disease in which surgical excision may be therapeutic when a multidisciplinary evaluation does not show any systemic disease. We recommend an excision when the lesion is persistent or shows an enlargement or when discomfort is reported. In the case of any further local recurrence, resection may be repeated.


Asunto(s)
Amiloidosis , Enfermedades de la Lengua , Amiloide , Amiloidosis/diagnóstico , Amiloidosis/cirugía , Biopsia , Humanos , Masculino , Persona de Mediana Edad , Lengua/cirugía , Enfermedades de la Lengua/diagnóstico , Enfermedades de la Lengua/cirugía
3.
Artículo en Inglés | MEDLINE | ID: mdl-32231082

RESUMEN

Peri-implant soft tissues play a role of paramount importance, not only on the esthetic appearance, but also on the maintenance and long-term stability of implants. The present report presents the conclusions from the Consensus Conference of the South European North African Middle Eastern Implantology & Modern Dentistry Association (SENAME) (4-6 November 2016, Cairo, Egypt). The conference focused on the topic of the soft tissue around dental implants, and in particular, on the influence of implant configurations on the marginal soft tissues, soft tissue alterations after immediate, early or delayed implant placement and immediate loading, the long-term outcomes of soft tissue stability around dental implants, and soft tissue augmentation around dental implants. Thirty world experts in this field were invited to take part in this two-day event; however, only 29 experts were in the final consensus voting process.


Asunto(s)
Implantes Dentales , Mucosa Bucal , Consenso , Egipto , Humanos
4.
Materials (Basel) ; 13(5)2020 Feb 28.
Artículo en Inglés | MEDLINE | ID: mdl-32121085

RESUMEN

AIM: The purpose of the study was the evaluation of the esthetic and physical changes produced on colored titanium Grade 5 (Ti6Al4V) laser treated surfaces to be used in implant dentistry for esthetic success. MATERIALS AND METHODS: Colored titanium surfaces were obtained with laser treatment. The physical and topographic properties were evaluated by stereo, light, and electron microscopy and profilometric analyses. L*a*b* colorimetric coordinates were measured by spectrometry, and the superficial chemical characteristics were evaluated by energy dispersive X-ray analysis. RESULTS: Within the complete palette of titanium colors, pinks (P1-P2), incarnadine (I), and white (W) obtained by laser were selected. The topography, texture, hues, saturation, roughness, and porosity of the samples were compared with those of machined (M) and sand-blasted and etched (SBAE) control surfaces. P1, P2, and I, similar in hue and roughness (Ra @ 0.5 µm), had a microgroove spacing of 56 µm and a decreasing porosity. The W sample with a "checkerboard" texture and a light color (L* 96.31) was similar to the M samples (Ra = 0.32 µm), but different from SBAE (Ra = 1.41 µm, L* 65.47). DISCUSSION: The aspects of hard and soft tissue could result in an esthetic failure of the dental implant by showing the dark color of the fixture or abutment. The two different pinks and incarnadine surfaces showed favorable esthetic and physical features to promote dental implant success even in the maxillary anterior area with gingival recession, asymmetry, and deficiency. CONCLUSION: Titanium colored laser surfaces represent a valid alternative to those currently traditionally obtained and interesting and potential perspectives in the management of dental implants' esthetic failure.

5.
Materials (Basel) ; 13(5)2020 Mar 05.
Artículo en Inglés | MEDLINE | ID: mdl-32150927

RESUMEN

BACKGROUND: The histological and histomorphometrical results were evaluated between vital whole and non-vital endodontically treated teeth used as autologous grafts in post-extractive socket preservation procedures. METHODS: Twenty-eight patients (average age 51.79 ± 5.97 years) with post-extractive defects were enrolled in five dentistry centers. All patients were divided into two groups: with whole teeth (Group 1) and teeth with endodontical root canal therapy (Group 2). The extracted teeth were processed with the Tooth Transformer device to obtain a demineralized and granulated graft material used with a resorbable collagen membrane for socket preservation. After four months, 32 bone biopsies were obtained for histological, histomorphometric, and statistical analysis. RESULTS: During the bone healing period, no infection signs were observed. Nineteen biopsies in group 1 and 13 biopsies in group 2 were detected. The histological analysis showed neither inflammatory nor infective reaction in both groups. Autologous grafts surrounded by new bone were observed in all samples and, at high magnification, partially resorbed dentin and enamel structures were detected. No gutta-percha or cement was identified. Small non-statistically significant differences between the groups, in total bone volume (BV), autologous graft residual, and vital bone percentage were detected. CONCLUSIONS: The study showed that the TT Transformer grafts were capable of producing new vital bone in socket preservation procedures. The histomorphometric results showed no statistical differences comparing whole and endodontically treated teeth in bone regeneration. Further studies will be carried out in order to understand the advantages of the autologous graft materials obtained from the tooth compared with the current biomaterials in bone regeneration treatments.

6.
J Tissue Eng Regen Med ; 14(5): 701-713, 2020 05.
Artículo en Inglés | MEDLINE | ID: mdl-32174023

RESUMEN

Diabetic patients display increased risk of periodontitis and failure in bone augmentation procedures. Mesenchymal stem cells (MSCs) and platelet-rich plasma (PRP) represent a relevant advantage in tissue repair process and regenerative medicine. We isolated MSCs from Bichat's buccal fat pad (BFP) and measured the effects of glucose and PRP on cell number and osteogenic differentiation potential. Cells were cultured in the presence of 5.5-mM glucose (low glucose [LG]) or 25-mM glucose (high glucose [HG]). BFP-MSC number was significantly lower when cells were cultured in HG compared with those in LG. Following osteogenic differentiation procedures, calcium accumulation, alkaline phosphatase activity, and expression of osteogenic markers were significantly lower in HG compared with LG. Exposure of BFP-MSC to PRP significantly increased cell number and osteogenic differentiation potential, reaching comparable levels in LG and in HG. Thus, high-glucose concentrations impair BFP-MSC growth and osteogenic differentiation. However, these detrimental effects are largely counteracted by PRP.

7.
Quintessence Int ; 51(3): 204-211, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32020130

RESUMEN

OBJECTIVES: Presence of clinical attachment loss on the distal aspect to the second molar may be associated with malposition of the third molar. The aim of this study was to evaluate the reduction of clinical attachment loss at the distal aspect of the second molar after third molar extraction and application of leukocyte- and platelet-rich fibrin (L-PRF). METHOD AND MATERIALS: Eighteen subjects with a clinical attachment loss on the distal site to the second molar associated with impacted third molar in both sides of the jaw were recruited for the study. For each subject the teeth were randomly allocated in test and control groups. After surgical removal of the impacted third molar, the L-PRF was inserted in the fresh alveolar socket of test sites; in the control sites no graft was inserted after extraction. Full-mouth plaque score, full-mouth bleeding score, clinical attachment level (CAL), probing depth, and gingival recession were assessed at baseline and 6 months later. RESULTS: After 6 months, mean CAL change was 1.99 ± 1.18 mm in the test group and 1.15 ± 1.01 mm in the control group; probing depth change was 1.33 ± 0.87 mm in the test group and 0.50 ± 0.63 mm in the control group. Statistically significant differences (P < .05) were observed between groups in terms of CAL and probing depth changes. No differences were found in gingival recession changes. CONCLUSION: Within the limits of the present study, the sites treated by means of application of L-PRF after impacted third molar extraction showed better results in terms of CAL gain and probing depth reduction when compared with control sites.


Asunto(s)
Fibrina Rica en Plaquetas , Diente Impactado , Humanos , Diente Molar , Tercer Molar , Bolsa Periodontal , Extracción Dental
8.
J Oral Rehabil ; 47(1): 42-52, 2020 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-31332814

RESUMEN

OBJECTIVES: To evaluate the oral health-related quality of life (OHRQoL) of patients with burning mouth syndrome (BMS) by comparing the Oral Health Impact Profile-14 (OHIP-14) and Geriatric Oral Health Assessment Index (GOHAI) tests, assessing their dependence with pain, anxiety and depression and, secondly, to analyse the changes in time after treatment with psychotropic drugs. METHODS: Twenty-six patients and 26 controls were included. The GOHAI, OHIP-14, visual analogue scale (VAS) and the Hamilton Rating Scales for Depression and Anxiety (HAM-D and HAM-A) were performed at baseline (time 0) and after 6 months of treatment (time 1). Descriptive statistics, the Mann-Whitney non-parametric test for two independent samples and the Wilcoxon non-parametric test for two paired samples were used. RESULTS: The scores from all outcome measurements were statistically significantly different between the cases and controls (P < .001) with a strong correlation between the GOHAI and the OHIP-14 (P < .001). The BMS patients showed a statistically significant improvement in the VAS, HAM-D and HAM-A scores from time 0 to time 1 (P < 0.001), and in the OHIP-14 scores (P < .004**) after the treatment, but no statistically significant difference in the GOHAI score (.464). CONCLUSIONS: Burning mouth syndrome patients showed poorer scores on all scales compared to the healthy subjects with a lower OHRQoL. OHIP-14 gives a greater weight to psychological and behavioural outcomes in evaluating oral health than GOHAI, and therefore, it is a more effective questionnaire in terms of the evaluation of the treatment response. The management of BMS can improve pain, anxiety and depression and the OHRQoL.


Asunto(s)
Síndrome de Boca Ardiente , Salud Bucal , Anciano , Evaluación Geriátrica , Humanos , Calidad de Vida , Encuestas y Cuestionarios
9.
Int J Oral Implantol (Berl) ; 12(4): 399-416, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31781696

RESUMEN

PURPOSE: To analyse and compare the dimensional changes of unassisted extraction sockets with alveolar ridge preservation (ARP) techniques and investigate any factors that impact the resorption of the alveolar bone. MATERIALS AND METHODS: A systematic search was conducted to identify randomised clinical trials (RCTs). All data were extracted, and a meta-analysis was performed for the changes in all buccolingual ridge width, midbuccal and midlingual ridge height, and mesial and distal ridge height, and horizontal width at reference points apical to the crestal area. RESULTS: Based on 14 RCTs, the effectiveness of ARP in reducing the dimensions of the postextraction alveolar socket was confirmed. The clinical magnitude of this effect was 1.95 mm in the buccolingual ridge width, 1.62 mm in the midbuccal ridge height, and 1.26 mm on the midlingual ridge height. Additionally, 0.45 mm and 0.34 mm for mesial and distal ridge height, and 1.21 mm, and 0.76 mm for ridge width changes at points 3 and 5 mm apical to the crest were noted. Meta-regression analyses revealed that the reflection of flaps and primary wound coverage during ARP may have detrimental effects on bone remodelling, while no statistical significance was observed for any of the bone graft substitutes or the percentage of molar sockets. CONCLUSIONS: Regardless of the protocol, ARP can only minimise ridge resorption. ARP is most effective on horizontal ridge width, providing the most benefit coronally (approximating the crest), followed by the midbuccal ridge height.


Asunto(s)
Aumento de la Cresta Alveolar , Proceso Alveolar , Consenso , Ensayos Clínicos Controlados Aleatorios como Asunto , Extracción Dental , Alveolo Dental
10.
Implant Dent ; 28(6): 590-602, 2019 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-31274666

RESUMEN

PURPOSE: To compare the clinical and patient-reported outcomes of ≤6-mm implants with those of ≥10-mm implants placed after both lateral and transcrestal sinus floor elevation. MATERIALS AND METHODS: Using PubMed (MEDLINE), EMBASE, and Cochrane, a literature search for randomized controlled trials was performed. All the outcome variables were evaluated through a quantitative meta-analysis, and the influence of other clinical covariates were determined with a metaregression. For the survival outcomes, trial sequential analysis (TSA) was performed to adjust results for type I and II errors and to analyze the power of the available evidence. RESULTS: After full-text reading, 12 studies were included in the analyses. No statistically significant difference was found after 3 years between the 2 study groups (P = 0.36). Short implants displayed fewer biological complications (P = 0.05), less marginal bone loss (MBL) from implant placement (P < 0.01), and reduced surgical time and treatment cost. However, long implants showed a statistically significant smaller number of prosthetic complications (P = 0.03). TSA confirmed the results of the meta-analysis, revealing that additional studies are needed due to low statistical power of the available evidence. CONCLUSION: The placement of short implants is a predictable option in treating patients with maxillary atrophy up to a 3-year follow-up. Studies with a longer observational period are needed to study the long-term performance of these implants.


Asunto(s)
Implantes Dentales , Diseño de Prótesis Dental , Elevación del Piso del Seno Maxilar , Atrofia , Consenso , Implantación Dental Endoósea , Fracaso de la Restauración Dental , Humanos , Maxilar , Ensayos Clínicos Controlados Aleatorios como Asunto , Resultado del Tratamiento
11.
Materials (Basel) ; 12(11)2019 06 09.
Artículo en Inglés | MEDLINE | ID: mdl-31181858

RESUMEN

BACKGROUND: Hardness is considered an important parameter for evaluating the clinical performance of dental implant bone drills. It is connected to the chemical composition, microstructure conformation and manufacture of the surgical drills. METHODS: Microstructure of five dental implant drills using scanning electronic microscopy (SEM) integrated with energy dispersive X-ray spectrometry. Vickers microhardness was measured using a CV 2000 microhardness tester with an indentation force of 500 g. RESULTS: Composition of the implant drills was typical of martensitic stainless steel (MSS). The drills contained 13%-17% of Cr; Mo, Si and Mn were present as minor ligands. The examined bone drills showed different external surface conformation and hardness in relation to the different industrial production processes. A rougher external surface and a higher hardness value are characteristics of the surgical bone drills produced by hot forming; the implant drills produced by machining showed mailing lines on their external surface and a lower hardness. CONCLUSIONS: Different compositions and treatments were used by the manufacturers to improve the hardness of the external layer of the dental implant drills making them prone to a diverse heat generation during the implant site preparation.

12.
Materials (Basel) ; 12(11)2019 May 30.
Artículo en Inglés | MEDLINE | ID: mdl-31151141

RESUMEN

The bone-implant interface influences peri-implant bone healing and osseointegration. Among various nano-engineering techniques used for titanium surface modification, anodization is a simple, high-throughput and low-cost process, resulting in a nanoporous oxide coating which can promote osseointegration and impart antimicrobial and immunomodulatory properties. We anodized rounded tip dental implants of commercial grade titanium in aqueous phosphoric acid modified with calcium and potassium acetate, and characterized the resulting surface morphology and composition with scanning electron microscopy and energy dispersive spectrometry. The appearance of nanopores on these implants confirmed successful nanoscale morphology modification. Additionally, the metal cations of the used salts were incorporated into the porous coating together with phosphate, which can be convenient for osseointegration. The proposed method for surface nanostructuring of titanium alloy could allow for fabrication of dental implants with improved biocompatibility in the next stage of research.

13.
Materials (Basel) ; 12(5)2019 Mar 04.
Artículo en Inglés | MEDLINE | ID: mdl-30836588

RESUMEN

BACKGROUND: Titanium dental implants are today widely used with osseointegration mainly dependently on the implant surface properties. Different processing routes lead to different surface characteristics resulting, of course, in different in situ behaviors of the implants. MATERIALS: The effect of different treatments, whether mechanical or chemical, on the surface morphology of titanium implants were investigated. To this aim, various experimental methods, including roughness analysis as well scanning electron microscope (SEM) observations, were applied. RESULTS: The results showed that, in contrast to the mechanical treatments, the chemical ones gave rise to a more irregular surface. SEM observations suggested that where commercial pure titanium was used, the chemical treatments provided implant surfaces without contaminations. In contrast, sandblasted implants could cause potential risks of surface contamination because of the presence of blasting particles remnants. CONCLUSIONS: The examined implant surfaces showed different roughness levels in relation to the superficial treatment applied. The acid-etched surfaces were characterized by the presence of deeper valleys and higher peaks than the sandblasted surfaces. For this reason, acid-etched surfaces can be more easily damaged by the stress produced by the peri-implant bone during surgical implant placement.

14.
Int J Mol Sci ; 20(3)2019 Jan 31.
Artículo en Inglés | MEDLINE | ID: mdl-30708975

RESUMEN

Lack of standardization of clinically compliant culture protocols of mesenchymal stem cells for re-implantation in humans have hindered clinical progress in the field of tissue regeneration to repair maxillofacial and orthopedic defects. The goal of this study was to establish a clinically relevant osteogenic protocol for collection and expansion of autologous stem cells to be used at Marshall University for re-implantation and repair of maxillofacial and orthopedic conditions. Human bone marrow (hBM) samples were collected from patients undergoing intramedullary nail fixation for closed femoral fractures. hBM mesenchymal cells were expanded by growing them first in Petri dishes for two weeks, followed by a week of culture using Perfecta 3D Hanging Drop Plates®. Various scaffold materials were tested and analyzed for cellular integration, vitality, and differentiation capacity of harvested hBM-MSCs including: 60/40 blend of hydroxyapatite biomatrix; Acellular bone composite discs; Allowash®, cancellous bone cubes; PLGA (poly lactic-co-glycolic acid); and Woven chitin derived fiber. We found that the 3D spheroid culture allowed production of hBM mesenchymal cells that retained osteoblast differentiation capacity over a monolayer culture of hBM-MSCs without the need to use chemical or hormonal modulation. We also observed that hydroxyapatite and Allowash cancellous bone scaffolds allowed better cell integration and viability properties as compared to other materials tested in this study. In conclusion, the multimodal culture methodology we developed creates actively differentiating stem-cell spheroids that can then be readily utilized in clinical practices to improve the regeneration of tissues of the head and the body.


Asunto(s)
Fracturas Óseas/terapia , Células Madre Mesenquimatosas/citología , Osteogénesis , Esferoides Celulares/citología , Andamios del Tejido/química , Adulto , Diferenciación Celular , Supervivencia Celular , Células Cultivadas , Niño , Durapatita/química , Femenino , Humanos , Masculino , Trasplante de Células Madre Mesenquimatosas , Medicina Regenerativa , Trasplante Autólogo
15.
Biomed Res Int ; 2018: 8143962, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-29984249

RESUMEN

Background: Considerations about heat generation, wear, and corrosion due to some macrostructural bur components (e.g., cutting lips, rake angle, flute, and helix angle) have been widely reported. However, little is known about how the microstructural components of the implant drill surface can influence the implant drill lifetime and clinical performance. Aim: To investigate accurately the surface morphology of surgical bone drill, by means of multivariate and multidimensional statistical analysis, in order to assess roughness parameters able to predict the evolution of tribological phenomena linked to heat development, wear, and corrosion occurring in clinical use. Materials and Methods: The surfaces of implant drills approximately 2.0mm in diameter made by five manufacturers were examined by means of confocal microscope with white light laser interferometry, obtaining several surface roughness parameters. Statistical multivariate analysis based on discriminant analysis showed, for each cut-off, the parameters which discriminate the manufacturers. Results: The microstructural parameters used by discriminant analysis evidenced several differences in terms of drill surface roughness between the five manufacturers. Conclusions: The observed surface roughness difference of drills is able to predict a different durability and clinical performance especially in heat generation and wear onset.


Asunto(s)
Implantación Dental Endoósea , Implantes Dentales , Osteotomía , Huesos , Calor
16.
Bioengineering (Basel) ; 5(2)2018 Mar 31.
Artículo en Inglés | MEDLINE | ID: mdl-29614717

RESUMEN

Non-transfusional hemocomponents for surgical use are autogenous products prepared through the centrifugation of a blood sample from a patient. Their potential beneficial outcomes include hard and soft tissue regeneration, local hemostasis, and the acceleration of wound healing. Therefore, they are suitable for application in different medical fields as therapeutic options and in surgical practices that require tissue regeneration.

17.
Quintessence Int ; 47(5): 407-16, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27110603

RESUMEN

OBJECTIVE: A papilla preservation crown-lengthening procedure (PPCL) was proposed for treatment of the maxillary anterior teeth (canine to canine) and compared to two traditional techniques. METHOD AND MATERIALS: Thirty patients were assigned to three treatment groups: PPCL, the apically positioned flap with buccal approach (APF-B), and the apically positioned flap with buccal and palatal approach (APF-BP). Several clinical parameters were recorded at baseline and 6 months after surgery. RESULTS: Although no statistically significant differences were reported in many of the clinical parameters examined, APF-B and APF-BP showed a significantly higher interproximal clinical attachment loss when compared to PPCL. In the PPCL group, there was a significant increase in esthetic appraisal by the patients. CONCLUSION: Crown lengthening using a papilla-preservation flap approach and osseous recontouring is a viable alternative approach and could be useful in esthetic regions.


Asunto(s)
Alargamiento de Corona/métodos , Estética Dental , Maxilar/cirugía , Adulto , Femenino , Humanos , Masculino , Satisfacción del Paciente , Estudios Prospectivos , Colgajos Quirúrgicos , Resultado del Tratamiento
18.
Biomed Res Int ; 2016: 8767845, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27027093

RESUMEN

The purpose of this randomized controlled study is to investigate the clinical results obtained over four years and incidence of complications associated with one- versus two-piece custom made zirconia anchorages, in single tooth implant-supported restorations of the maxillary anterior region. Sixty-five patients, with a total of 74 missing maxillary teeth, were selected in the period from February 2007 to July 2010. Two different ways of custom made zirconia abutment and final prosthetic restoration were evaluated: a standard zirconia abutment associated with a pressed layer of lithium disilicate with an all-ceramic cemented restoration versus one-piece restoration with the facing porcelain fired and pressed straight to the custom made zirconia abutment. In 29 cases, the restoration consisted of an all-ceramic restoration for cementation (two pieces); in 45 cases the restoration was a screw-retained restoration (one piece). Three all-ceramic restorations broke during the observation time. Two one-piece restorations fractured after 26 months. At follow-up examination there were no significant differences between one-piece and two-piece groups regarding the PI, BI, and MBL. Awaiting studies with longer follow-up times, a careful conclusion is that zirconia anchorages for single-implant restorations seem to demonstrate good short-term technical and biological results.


Asunto(s)
Implantes Dentales de Diente Único/efectos adversos , Materiales Dentales/efectos adversos , Maxilar/cirugía , Circonio/efectos adversos , Materiales Dentales/uso terapéutico , Porcelana Dental/efectos adversos , Porcelana Dental/uso terapéutico , Fracaso de la Restauración Dental , Femenino , Humanos , Masculino , Maxilar/efectos de los fármacos , Maxilar/patología , Persona de Mediana Edad , Circonio/uso terapéutico
19.
Int J Oral Maxillofac Implants ; 31(1): 162-6, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26800173

RESUMEN

PURPOSE: The aim of this case series study was to evaluate clinical and radiographic changes of soft and hard tissues around tapered, platform-switched, laser-microtextured implants 24 months after crown placement. MATERIALS AND METHODS: Twenty tapered, platform-switched, laser-microtextured collar implants were placed in 20 patients. Full-mouth plaque score, full-mouth bleeding score, probing depth, and mucosal recession were recorded at the time of crown cementation and after 24 months follow-up. The marginal bone-level changes at the mesial and distal aspects of the implants were calculated by subtracting from baseline and 24-month implant marginal bone level. RESULTS: In terms of the full-mouth plaque score and full-mouth bleeding score, tapered, platform-switched, laser-microtextured implants showed statistically significant improvements at 6 months when compared to baseline (P < .001). Statistically significantly deeper probing depths (P < .001) were found when comparing baseline and at 24 months at mesial, lingual, and distal sites. However, no statistically significant difference was found at the buccal aspects (P = .064). Radiographic marginal bone loss at 2-year follow-up for tapered, platform-switched, laser-microtextured implants was 0.72 ± 0.16 mm and 0.67 ± 0.15 mm at the mesial and distal sites, respectively. CONCLUSION: Within the limits of this study, tapered, platform-switched, laser-microtextured implants maintained marginal bone level (less than 1 mm radiographic bone loss) as well as limited mucosa recession over a 2-year period.


Asunto(s)
Pérdida de Hueso Alveolar/clasificación , Grabado Dental/métodos , Diseño de Implante Dental-Pilar , Implantes Dentales de Diente Único , Rayos Láser , Adulto , Pérdida de Hueso Alveolar/diagnóstico por imagen , Estudios de Casos y Controles , Cementación/métodos , Coronas , Índice de Placa Dental , Prótesis Dental de Soporte Implantado , Femenino , Estudios de Seguimiento , Recesión Gingival/clasificación , Humanos , Masculino , Persona de Mediana Edad , Índice Periodontal , Bolsa Periodontal/clasificación , Radiografía de Mordida Lateral , Propiedades de Superficie
20.
J Med Case Rep ; 10: 16, 2016 Jan 20.
Artículo en Inglés | MEDLINE | ID: mdl-26790751

RESUMEN

BACKGROUND: Orbital fracture usually occurs as a result of blunt orbital and facial trauma and may involve ocular injuries. International studies on orbital floor fracture show several differences in epidemiology, diagnostic criteria, surgical treatment modalities, and complication rates; therefore, any comparison should be made with caution. Here we describe an unusual case involving a 19-year-old man with violence-related periorbital trauma, wherein a foreign body (a plastic pen cap) traversed the median wall of the maxillary sinus and penetrated the lower turbinate. CASE PRESENTATION: A 19-year-old Caucasian man was referred to our department with localized pain and swelling in the left suborbital region following a physical fight in May 2014. A clinical examination revealed no abnormalities in his eyeballs or eye movement, palpation of the orbital contour revealed no fractures, and ophthalmological evaluation showed no evidence of diplopia. A computed tomography scan revealed fractures in the left orbital floor, periorbital tissue herniation without muscular entrapment and left maxillary hemosinus were observed. A hypodense soft tissue mass was lodged in the left orbital floor, which extended to the median wall of the maxillary sinus and penetrated the left lower turbinate. Surgical exploration of the foreign body was conducted, revealing the foreign body to be a pen cap. CONCLUSIONS: History or clinical examination alone may be inadequate to raise the suspicion of a retained periorbital foreign body in a situation of orbital region trauma. Computed tomography is important for the evaluation of periorbital injuries, especially because it could reveal the presence of a foreign body. Periorbital foreign bodies can be observed distinctly on computed tomography, which remains the most sensitive study and should be the first imaging modality in such cases.


Asunto(s)
Cuerpos Extraños/diagnóstico por imagen , Seno Maxilar/lesiones , Fracturas Orbitales/diagnóstico por imagen , Tomografía Computarizada por Rayos X , Violencia , Adulto , Cuerpos Extraños/complicaciones , Cuerpos Extraños/cirugía , Humanos , Masculino , Seno Maxilar/diagnóstico por imagen , Seno Maxilar/cirugía , Fracturas Orbitales/etiología , Fracturas Orbitales/cirugía , Resultado del Tratamiento
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