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1.
Braz. j. oral sci ; 21: e224809, jan.-dez. 2022. ilus
Artículo en Inglés | LILACS, BBO - Odontología | ID: biblio-1354721

RESUMEN

Aim: The aim of the present study was to evaluate the microbial contamination in internal and external walls of cone morse implant walls. Methods: Eleven patients with edentulous mandibular posterior area were selected to received dental implants, divided into groups: submerged (S), non-submerged (NS), and immediately loaded (IL). Microbiological evaluations (microorganisms' number, aerobic and anaerobic colony forming units (CFU) number and microorganisms' qualification) were divided into internal and external collection of the implant walls, at different stages: T0 (surgical procedure), T2 (suture removal), T4 (reopening S group), T6 (suture removal S group), and T8 (abutment placement in S and NS). All data were submitted to statistical analyses, with confidence level of 0.05. Results: There was difference in number of microorganisms observed over time within the same group (p < 0.05). A difference was observed in CFU when evaluated within the same group over time (p < 0.05), except for the IL group. In internal collection, a predominance of non-formation of microorganisms was observed at T0 in all groups, while formation of Gram-positive Diplococci and Gram-positive Bacilli was observed at T8 (p>0.05). In external collection, an increase in number of microorganisms was observed at T0. Conclusion: There was no difference in microbial contamination among the evaluated groups. The microorganism's colonization changed over time


Asunto(s)
Humanos , Masculino , Femenino , Cirugía Bucal , Implantes Dentales , Actinobacteria
2.
Braz. j. oral sci ; 21: e224977, jan.-dez. 2022. ilus
Artículo en Inglés | LILACS, BBO - Odontología | ID: biblio-1354723

RESUMEN

Aim: This study aims to evaluate the clinical assessment results of periimplant soft tissue with morse taper (internal abutment connection). Methods: The study was conducted using a rapid review by searching the articles from PubMed NCBI and Cochrane by using keywords. All articles were selected by the year, duplication, title, abstract, full-text, and finally, all selected articles were processed for final review. Following clinical parameters were included; Periimplant Probing Pocket Depth (PPD), Plaque Score (PS), modified Plaque Index (mPI), Mucosal Thickness (MTh), Gingival Height (GH), periimplant mucosal zenith, Pink Esthetic Score (PES), Bleeding On Probing (BOP), Sulcus Bleeding Index (SBI), and modified Gingival Index (mGI). Results: 9 selected articles were obtained from the initial literature searching count of 70 articles. The overall samples included 326 morse taper implants. Based on the evaluation, 3 out of 4 articles reported pocket depth < 4 mm, no bleeding was reported in 2 out of 4 articles. 4 out of 4 articles reported low plaque accumulation, low soft tissue recession was reported in 3 out of 3 articles, and 4 out of 4 articles reported acceptable PES values. Conclusion: The evaluations indicate that the morse taper (internal abutment connection) has favorable assessment results based on various clinical parameters


Asunto(s)
Implantes Dentales , Pilares Dentales , Traumatismos de los Tejidos Blandos , Diseño de Implante Dental-Pilar , Encía , Mucosa Bucal
3.
Braz. j. oral sci ; 21: e225686, jan.-dez. 2022. tab
Artículo en Inglés | LILACS, BBO - Odontología | ID: biblio-1366509

RESUMEN

Aim: Tooth loss is very prevalent in Brazil, reflecting high demand for dental services, especially those related to oral rehabilitation. This study aimed to assess the quality of life in total edentulous patients rehabilitated with implants and fixed prosthesis. Methods: Thirty-two patients were evaluated before and after rehabilitation with dental implants and fixed prosthesis using the OHIP-14 questionnaire and the Visual Analogue Scale (VAS) after 6 months follow-up. Results:OHIP-14 revealed a significant improvement after treatment in all seven parameters and in the global score (P < 0.001). VAS presented positive results related to patient satisfaction regarding oral rehabilitation, except for the hygiene of the fixed dentures. Conclusion: At the end of this study, OHIP-14 scores decreased by 50% in most of the questions raised, and VAS presented positive results, except for hygiene of the fixed dentures, presenting an improvement in the quality of life of total edentulous patients after rehabilitation with implants and fixed prosthesis


Asunto(s)
Humanos , Masculino , Femenino , Calidad de Vida , Implantes Dentales , Boca Edéntula/rehabilitación , Satisfacción del Paciente , Dentadura Completa
4.
Adv Exp Med Biol ; 1364: 373-396, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35508884

RESUMEN

While implant surgical interventions are now routinely performed, failures still occur and may have dramatic consequences. The clinical outcome depends on the evolution of the biomechanical properties of the bone-implant interface (BII). This chapter reviews studies investigating the use of quantitative ultrasound (QUS) techniques for the characterization of the BII.First, studies on controlled configurations evidenced the influence of healing processes and of the loading conditions on the ultrasonic response of the BII. The gap of acoustical properties at the BII increases (i) during healing and (ii) when stress at the BII increases, therefore inducing a decrease of the reflection coefficient at the BII.Second, an acoustical model of the BII is proposed to better understand the parameters influencing the interaction between ultrasound and the BII. The reflection coefficient is shown to decrease when (i) the BII is better osseointegrated, (ii) the implant roughness decreases, (iii) the frequency of QUS decreases and (iv) the bone mass density increases.Finally, a 10 MHz device aiming at assessing dental implant stability was validated in vitro, in silico and in vivo. A comparison between QUS and resonance frequency analysis (RFA) techniques showed a better sensitivity of QUS to changes of the parameters related to the implant stability.


Asunto(s)
Interfase Hueso-Implante , Implantes Dentales , Análisis de Elementos Finitos , Oseointegración/fisiología , Prótesis e Implantes , Ultrasonido
5.
BMC Oral Health ; 22(1): 157, 2022 May 06.
Artículo en Inglés | MEDLINE | ID: mdl-35524324

RESUMEN

BACKGROUND: Peri-implantitis therapy is a major problem in implantology. Because of challenging rough implant surface and implant geometry, microorganisms can hide and survive in implant microstructures and impede debridement. We developed a new water jet (WJ) device and a new cold atmospheric pressure plasma (CAP) device to overcome these problems and investigated aspects of efficacy in vitro and safety with the aim to create the prerequisites for a clinical pilot study with these medical devices. METHODS: We compared the efficiency of a single treatment with a WJ or curette and cotton swab (CC) without or with adjunctive use of CAP (WJ + CAP, CC + CAP) to remove biofilm in vitro from rough titanium discs. Treatment efficacy was evaluated by measuring turbidity up to 72 h for bacterial re-growth or spreading of osteoblast-like cells (MG-63) after 5 days with scanning electron microscopy. With respect to application safety, the WJ and CAP instruments were examined according to basic regulations for medical devices. RESULTS: After 96 h of incubation all WJ and CC treated disks were turbid but 67% of WJ + CAP and 46% CC + CAP treated specimens were still clear. The increase in turbidity after WJ treatment was delayed by about 20 h compared to CC treatment. In combination with CAP the cell coverage significantly increased to 82% (WJ + CAP) or 72% (CC + CAP), compared to single treatment 11% (WJ) or 10% (CC). CONCLUSION: The newly developed water jet device effectively removes biofilm from rough titanium surfaces in vitro and, in combination with the new CAP device, biologically acceptable surfaces allow osteoblasts to grow. WJ in combination with CAP leads to cleaner surfaces than the usage of curette and cotton swabs with or without subsequent plasma treatment. Our next step will be a clinical pilot study with these new devices to assess the clinical healing process.


Asunto(s)
Implantes Dentales , Gases em Plasma , Biopelículas , Implantes Dentales/microbiología , Humanos , Microscopía Electrónica de Rastreo , Proyectos Piloto , Gases em Plasma/química , Propiedades de Superficie , Titanio/química , Agua
6.
Sci Rep ; 12(1): 7184, 2022 May 03.
Artículo en Inglés | MEDLINE | ID: mdl-35504969

RESUMEN

Acid-etching is one of the most popular processes for the surface treatment of dental implants. In this paper, acid-etching of commercially pure titanium (cpTi) in a 48% H2SO4 solution is investigated. The etching process time (0-8 h) and solution temperature (25-90 °C) are assumed to be the most effective operational conditions to affect the surface roughness parameters such as arithmetical mean deviation of the assessed profile on the surface (Ra) and average of maximum peak to valley height of the surface over considered length profile (Rz), as well as weight loss (WL) of the dental implants in etching process. For the first time, three multilayer perceptron artificial neural network (MLP-ANN) with two hidden layers was optimized to predict Ra, Rz, and WL. MLP is a feedforward class of ANN and ANN model that involves computations and mathematics which simulate the human-brain processes. The ANN models can properly predict Ra, Rz, and WL variations during etching as a function of process temperature and time. Moreover, WL can be increased to achieve a high Ra. At WL = 0, Ra of 0.5 µm is obtained, whereas Ra increases to 2 µm at WL = 0.78 µg/cm2. Also, ANN model was fed into a nonlinear sorting genetic algorithm (NSGA-II) to establish the optimization process and the ability of this method has been proven to predict the optimized etching conditions.


Asunto(s)
Implantes Dentales , Titanio , Humanos , Redes Neurales de la Computación , Temperatura
7.
Wiad Lek ; 75(3): 716-720, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35522883

RESUMEN

The article describes biological and non-biological factors that affect the long-term stay of the implant in the bone under functional load, quality indicators of artificial teeth implantation. Instead of the term «osseointegration¼, the authors use the terms «histointegration¼ and «histodisintegration¼ defining them. The following concepts are used: time of histointegration achievement, histofunctional and histoaesthetic integration/disintegration, mechanical and biological stability/destability, integration/disintegration of implant and prosthetic structure, morphological and functional stability and destability of the implant.


Asunto(s)
Implantes Dentales , Oseointegración , Huesos , Implantación Dental , Humanos
8.
Compend Contin Educ Dent ; 43(5): E1-E4, 2022 May.
Artículo en Inglés | MEDLINE | ID: mdl-35523315

RESUMEN

Several bioabsorbable membranes have been proposed to exclude soft-tissue ingrowth and to stabilize the bone graft when guided bone regeneration (GBR) is performed. The properties of the various membranes differ slightly due to variances in composition and manufacturing processes affecting their handling and suitability for specific techniques. The aim of this article is to present a technique to perform GBR with the use of a sugar-crosslinked absorbable collagen membrane in conjunction with a dehydrated amnion/chorion membrane (dHACM). This technique can be used to perform GBR at the time of tooth extraction and for ridge augmentation of an edentulous site in preparation for future dental implant placement. The use of a collagen membrane in combination with a dHACM can facilitate stabilization of the bone graft and membrane by providing the benefits of a long-lasting bioabsorbable collagen membrane in addition to the unique benefits of an amnion/chorion membrane, which has been shown to provide growth factors to the surgical site that have potential to enhance regenerative outcomes.


Asunto(s)
Aumento de la Cresta Alveolar , Implantes Dentales , Amnios , Regeneración Ósea , Corion , Colágeno , Implantación Dental Endoósea , Regeneración Tisular Guiada Periodontal , Membranas Artificiales , Azúcares
9.
Am J Dent ; 35(2): 75-78, 2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-35506961

RESUMEN

PURPOSE: To evaluate the failure rate of 1,000 immediately placed implants in fresh extraction sockets and their risk factors. METHODS: The data comprised files of 1,000 fresh socket implants placed during the 2014-2019 interval in three Tehran-based private dental clinics. The statistical method was survival analysis consisting of shared frailty and intra-cluster correlation. Moreover, Chi-squared test and Mann-Whitney U test were used to statistically analyze the relationship between each independent variable and the response variable (immediate implant failure). RESULTS: 40 cases of failures among the implants were found, accounting for a 4% failure rate. Shared frailty survival model indicated that only the implant system significantly affects the failure rate. Intra-clustered correlation was 0.41. Chi-squared analysis showed that gender and implant system both significantly affect immediate implant failure. None of the quantitative variables were significantly related to immediate implant failure according to the Mann-Whitney U test. CLINICAL SIGNIFICANCE: The data was gathered using a relatively large sample size to perform a reliable evaluation on success and predictability of implants placed into fresh extraction sites. A brief review on articles focusing on fresh socket implant success or failure published from years 2000-2020 is presented.


Asunto(s)
Implantes Dentales , Fragilidad , Carga Inmediata del Implante Dental , Fracaso de la Restauración Dental , Estudios de Seguimiento , Humanos , Carga Inmediata del Implante Dental/métodos , Irán , Estudios Retrospectivos , Factores de Riesgo , Extracción Dental , Alveolo Dental/cirugía , Resultado del Tratamiento
10.
Int J Prosthodont ; 35(2): 174-180, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35507530

RESUMEN

PURPOSE: To compare osteocalcin and crestal bone loss in implants placed under an immediate loading (IL) compared to a delayed loading (DL) protocol. MATERIALS AND METHODS: This preliminary, split-mouth, randomized controlled trial included 14 participants who required replacement of both mandibular first molars opposing a completely dentate maxillary arch. Two implants were placed in each participant. According to the split-mouth randomization method, a temporary crown was used for the IL protocol and a healing abutment was used for the DL protocol in each participant. Definitive crowns were cemented 3 months after implant placement. Osteocalcin levels were determined using ELISA, and crestal bone loss was evaluated using radiographs at 2 weeks, 3 months, and 12 months after implant placement. RESULTS: The mean osteocalcin level was significantly higher with IL than DL at each point (P < .001), with 95% CI of -262.89 to -439.10 (2 weeks); -238.02 to -375.98 (3 months); and -83.24 to -211.61 (12 months). Higher crestal bone loss was observed in IL when compared to DL implants at 2 weeks (P = .458, 95% CI: -0.10 to 0.21). Less crestal bone loss was observed with IL than DL at 3 months (P = .935) and 12 months (P = .42). CONCLUSION: Osteocalcin levels increased in both IL and DL implants, but higher levels were observed with IL. Higher crestal bone loss was observed with IL during the initial stages of treatment only.


Asunto(s)
Pérdida de Hueso Alveolar , Implantes Dentales , Carga Inmediata del Implante Dental , Pérdida de Hueso Alveolar/diagnóstico por imagen , Coronas , Implantación Dental Endoósea/métodos , Prótesis Dental de Soporte Implantado , Humanos , Diente Molar , Osteocalcina , Ensayos Clínicos Controlados Aleatorios como Asunto
11.
Int J Prosthodont ; 35(2): 194-200, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35507532

RESUMEN

PURPOSE: To test the push-out force and marginal leakage of different screw hole-sealing methods in monolithic zirconia implant crowns. MATERIALS AND METHODS: Ninety monolithic zirconia (Prettau, Zirkonzahn) specimens were milled with two different screw access hole designs: conventional smooth hole or threaded screw hole (for group PMMA-SC), and divided into five groups (n = 18) according to filling method: unbonded composite (UBC); bonded composite (BC); airborne-particle abrasion of screw hole and unbonded composite (ABR-UBC); airborne-particle abrasion of screw hole and bonded composite (ABR-BC); and PMMA screw plugs (PMMA-SC). Twelve specimens per group were subjected to static push-out force with a universal testing machine. Before testing, 6 specimens per group were stored in dry conditions, and 6 were kept in water storage (+37°C) for 7 days. For the remaining specimens (n = 6), cotton pellets were placed under the screw access hole fillings, and the specimens were immersed in 0.5% basic fuchsin solution for 2 weeks. Dye in cotton pellets was dissolved in 2 mL of water, and absorbances of the solutions were measured with a spectrophotometer at 465 nm. Data are reported as mean and SD. Statistical analysis was made using a generalized linear model with logarithmic transformation. RESULTS: PMMA-SC specimens showed the highest push-out forces (P < .0001) and lowest fuchsin penetration (P = .009). Airborne-particle abrasion increased the push-out force and decreased the microleakage in composite groups. The storage conditions affected the results of both unbonded groups. CONCLUSION: The design and sealing method of the screw access hole affect push-out force and microleakage.


Asunto(s)
Implantes Dentales , Polimetil Metacrilato , Tornillos Óseos , Coronas , Materiales Dentales , Análisis del Estrés Dental , Ensayo de Materiales , Agua , Circonio
12.
Biomed Res Int ; 2022: 9720488, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35496044

RESUMEN

The use of dental implants in oral rehabilitations has become increasingly common, thanks to the safety and predictability of these rehabilitations. Unfortunately, dental implants, being alloplastic devices, are not free from biomechanical complications, especially in the case in which the connections are complex and involve several components. The aim of the study is to highlight what could be surface alterations using different screwing torques, or by repeating the screwing process several times. In this study, 40 passant screws (Osstem®, South Korea Dental Implant Ebony Gold®) were examined under a Zeiss EVO LS 10 scanning electron microscope (SEM), operating with an accelerating voltage of 20 kV. Passant screws were subdivided into 4 groups: 30 Nmm tightening torque; maximum tightening torque; 2 times 30 Nmm tightening torque; no screwing, new ones (control group). There are no significant differences in the surfaces of the passant screws in SEM images, and the 100% of the passant screws is free of defects or fractures. Surely, further studies and investigations will certainly be needed to allow improvement of these devices.


Asunto(s)
Implantes Dentales , Tornillos Óseos , República de Corea , Proyectos de Investigación , Torque
13.
Front Cell Infect Microbiol ; 12: 823985, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35372118

RESUMEN

Objective: The primary aim of this current systematic review and meta-analysis was to evaluate the potential microbiological effect of probiotics on the implant microbiota. The secondary aim was to evaluate if probiotics have any effect as an adjunct to non-surgical peri-implant treatment in reducing peri-implant mucositis and peri-implantitis clinical parameters-bleeding on probing, modified Gingival Index, and pocket depth. Methods: The research focus questions were constructed in accordance with the Participants, Intervention, Comparison, and Outcomes (PICO) criteria, and a PROSPERO protocol was registered. A comprehensive systematic search in MEDLINE via the PubMed, Scopus, and Web of Science Core Collection databases was conducted. Two independent reviewers screened the reports based on the PICO criteria-inclusion and exclusion criteria. Results: In total, 467 records were identified, and ultimately, 7 papers were included: 3 papers in the qualitative synthesis of microbiological effect and 4 in the meta-analysis synthesis on pocket depth. The data synthesis showed that probiotics had no detectable effect on the implant microflora, and in the following data synthesis, no clinical peri-implantitis variable showed a significantly beneficial effect from probiotics in the test group compared to the control group. Conclusion: Within the limitations of this review, the oral implant microflora is not affected by probiotics nor do probiotics add any effect to the conventional non-surgical treatment of peri-implant mucositis and peri-implantitis.


Asunto(s)
Implantes Dentales , Microbiota , Periimplantitis , Probióticos , Estomatitis , Implantes Dentales/efectos adversos , Humanos , Periimplantitis/etiología , Periimplantitis/microbiología , Probióticos/uso terapéutico , Estomatitis/complicaciones , Estomatitis/terapia
14.
J Long Term Eff Med Implants ; 32(1): 19-23, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35377990

RESUMEN

PURPOSE: Chlorhexidine is the most favored and widely used antimicrobial agent for the treatment of peri-implantitis. But, not many clinicians are aware of its side effects on dental implants and its cytotoxic effects on osteoblasts. The objectives of this review are to study the effect of chlorhexidine on osteoblasts as well as on the surface topography of dental implants. MATERIALS AND METHODS: MEDLINE-PubMed (The National Library of Medicine, Washington DC) was used as a search engine. Databases were searched from 2010 to 2020 were explored using the following terms: "dental implant surface," "chlorhexidine mouthwash," "osteoblast cells," "osseointegration." From the total hits obtained, each article along with its cross-reference was manually read and filtered based on the focused question. The inclusion criteria included articles published only in English language involving human studies, randomized control trials, in vitro studies, and review articles. Exclusion criteria included studies published in languages other than English, orthodontic mini-implants, and pilot studies. The final process involved scrutinizing for any duplicate content of the hand searched articles. Following this, data was extracted from the compiled hand searched articles to obtain relevant information for the review. RESULTS: Chlorhexidine alters the surface topography of dental implants and causes cell cytotoxicity. This, in turn, can hinder the re-osseointegration potential and hence cause dental implant failure. It is, therefore, recommended to discourage the use of chlorhexidine as a surface decontaminant for peri-implantitis cases and practice implementing other antimicrobial agents.


Asunto(s)
Implantes Dentales , Métodos de Anclaje en Ortodoncia , Periimplantitis , Clorhexidina/uso terapéutico , Implantes Dentales/efectos adversos , Humanos , Oseointegración , Periimplantitis/tratamiento farmacológico , Periimplantitis/etiología , Estados Unidos
15.
J Long Term Eff Med Implants ; 32(1): 65-71, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35377995

RESUMEN

The aim of this retrospective study was to evaluate the long-term predictability of treatment using implants with hydrophobic and hydrophilic surfaces, according to clinical parameters and survival rates. Records from all patients who received dental implants between January 2013 and December 2014 at ILAPEO College were fully evaluated by two graduate dentists. Records with incomplete or unclear data were excluded from the study. The variables evaluated were demographic data, design of implants and prosthetic components, type of loading, data related to the patients' general health, and survival of implants and prostheses. The final retrospective sample comprised 776 patients with 2707 implants, with up to 5 years of follow-up. Survival rates of implants and prostheses were 97.93% and 98.77%, respectively. Implants with hydrophobic (97.87%) and hydrophilic (98.34%) surfaces exhibited similar survival rates. Considering the different types of loading, there was no statistically significant difference between loading protocols regarding implant survival rates. Unsuitable healing capacity, uncooperative and not motivated patient, loss of prosthesis, and peri-implant bone loss were confirmed statistically to be factors that may contribute to implant loss, according to hazard ratio and odds ratio. The present study showed similar and high overall survival rates for implant with both types of surfaces, in the long term. The surface treatment, implant model and loading protocol had no significant influence on implant loss. Therefore, the evaluated implant systems were able to offer a high predictability for both hydrophobic and hydrophilic implants.


Asunto(s)
Pérdida de Hueso Alveolar , Implantes Dentales , Pérdida de Hueso Alveolar/cirugía , Humanos , Estudios Retrospectivos , Tasa de Supervivencia
16.
Stomatologiia (Mosk) ; 101(2): 36-41, 2022.
Artículo en Ruso | MEDLINE | ID: mdl-35362701

RESUMEN

OBJECTIVE: The aim of the study was the creation of a universal epithesis fixation system that increases the reliability of its functioning in prosthetics of patients with maxillofacial defects of various genesis. MATERIAL AND METHODS: After the surgical preparation of patients, in accordance with the indications of the underlying disease, epithesis was made from rigid silicone elastomers using CAD/CAM technologies. For the production of attachments, the VT1-0 titanium alloy common in medicine was used. RESULTS: A universal epithesis fixation system was used for prosthetics of various parts of the patient's face. Depending on the clinical situation and the size of the prosthetics area, an intermediate lattice plate (mesostructure) of the appropriate size and configuration was selected. Two types of attachments were used to fix epithets: magnetic with a counterpart and non-magnetic mushroom-shaped. The universal epithesis attachment system is distinguished by the possibility of using each hole of the lattice, both for attaching it to the bone structure and for installing attachments, which makes it easy to fix the lattice to residual bone fragments and center the position of the transition elements and attachments depending on the aesthetic and functional needs of the structure in whole. CONCLUSION: The success of prosthetics largely depends on the epithesis attachment system. The proposed universal epithesis fixation system allows its use in various clinical situations and also reduces the cost of prosthetics for patients with maxillofacial defects.


Asunto(s)
Implantes Dentales , Cara/cirugía , Humanos , Reproducibilidad de los Resultados , Titanio
17.
Stomatologiia (Mosk) ; 101(2): 42-46, 2022.
Artículo en Ruso | MEDLINE | ID: mdl-35362702

RESUMEN

THE AIM OF THE STUDY: Was to assess the effectiveness of the use of hydroxyapatite (HAP) and tricalcium phosphate (TCF) modified with hyaluronic acid in the treatment of patients with periimplantitis. MATERIALS AND METHODS: Clinical studies were conducted in 128 patients (44% male and 56% female) aged up to 55 years, who sought dental care with the main diagnosis of periimplant mucositis and periimplantitis. To compare the features of osseointegration of dental implants under bone remodeling three groups of patients were formed: one control and 2 main ones. In the control group the wound was managed under a blood clot, in the first main group HAP and TCF and in the second main group HAP and TCF modified with hyaluronic acid were used. X-ray examination was performed in various modes. Clinical assessment of implant stability in the operated area was carried out using subjective (percussion and palpation method) and objective method of frequency resonance analysis using the Osstell ISQ device calculating the stability coefficient of the dental implant (SCDI). RESULTS: 12 months after the periimplant zone remodeling procedure the bone resorption rates surrounding the implant were statistically significantly the lowest in the second main group (0.682±0.006 mm, p<0.001) compared with the values in the control and first main groups (1.626±0.022 and 1.025±0.034 mm, respectively). In the former groups bone resorption continued to progress during the observation period. In patients of the second main group, the average values of the SCDI for all study periods were 68.97±1.09 units which turned out to be the highest indicator and significantly differed from the values of other observation groups (p<0.05), which may be due to a tighter fit of the implants to the surface of the newly formed bone tissue. CONCLUSION: The results of the study 12 months after the periimplant zone remodeling operation procedure prove the efficacy of HAP and TCF modified with hyaluronic acid for the treatment of patients with periimplantitis.


Asunto(s)
Implantes Dentales , Periimplantitis , Anciano , Fosfatos de Calcio , Implantes Dentales/efectos adversos , Durapatita/uso terapéutico , Femenino , Humanos , Ácido Hialurónico/uso terapéutico , Masculino , Periimplantitis/diagnóstico por imagen , Periimplantitis/tratamiento farmacológico , Resultado del Tratamiento
18.
Int J Oral Maxillofac Implants ; 37(2): 235-249, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35476853

RESUMEN

PURPOSE: This systematic review aimed to assess the clinical efficacy of antibiotics when used as an adjunct in treating peri-implant diseases. MATERIALS AND METHODS: A systematic search of papers published between January 1980 and March 2020 was conducted. Randomized clinical trials with at least 10 patients who had peri-implant diseases, treated with or without adjunctive antibiotics in combination with surgical or nonsurgical therapies, and with a minimum of at least 3 months of follow-up were included. Meta-analyses were conducted to analyze weighted mean differences in probing depth reduction, radiographic bone level gain, and odds ratio of treatment success. RESULTS: From the 856 articles identified, 10 articles met the inclusion criteria and were selected. Of these, 7 articles were used for the meta-analysis. The adjunctive use of antibiotics in the treatment of peri-implant diseases yielded significantly greater probing depth reduction (weighted mean differences = 0.56 mm at 3 months, P = .001; 0.77 mm at 6 months, P < .00001; 0.92 mm at 12 months, P < .00001), radiographic bone level gain (weighted mean differences = 0.64 mm, P = .03), and treatment success (odds ratio = 1.74, P = .04) compared to the same treatment without antibiotics. CONCLUSION: Based on the existing evidence, the use of adjunctive antibiotics to treat peri-implant diseases, especially peri-implantitis, provided potential benefits in clinical outcomes for up to 12 months posttherapy.


Asunto(s)
Implantes Dentales , Mucositis , Periimplantitis , Estomatitis , Antibacterianos/uso terapéutico , Implantes Dentales/efectos adversos , Humanos , Mucositis/inducido químicamente , Mucositis/tratamiento farmacológico , Periimplantitis/terapia
19.
Int J Oral Maxillofac Implants ; 37(2): 250-269, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35476854

RESUMEN

PURPOSE: The exposure of nonresorbable membranes following alveolar bone augmentation is one of the most frequently occurring complications. This review aimed to investigate the treatments that can be adopted to manage the exposure of polytetrafluoroethylene-based membranes (PTFE-ms) and titanium meshes (TMs) and their outcomes. MATERIALS AND METHODS: Two independent reviewers electronically and manually searched the EMBASE, PubMed/MEDLINE, Scopus, and Cochrane bibliographic databases to retrieve pertinent articles available between January 2000 and March 2021. Only human studies describing the type of treatment and the soft tissue outcome following exposure of PTFE-ms or TMs were included. RESULTS: Overall, 11 articles in the PTFE-ms group and 24 in the TM group were included for data analysis. Results indicated that, in both groups, two distinct therapeutic strategies are mostly applied in case of exposure, namely, pharmacologic and mechanical treatments. Other options have been identified seldomly. Statistically significant evidence of an association between the type of barrier membrane and the exposure rate (28.7% vs 38.5% for TMs and PTFE-ms, respectively; P = .019) and between the type of exposed device and the treatment outcome in terms of removal rate following therapy (11.9% and 44.4% for TMs and PTFE-ms, respectively; P < .001) was noted. CONCLUSION: In both groups, chlorhexidine applications and meticulous plaque control may lead to improved healing conditions after exposure. Surgical removal of the exposed portion can be considered to promote secondary intention healing. The beneficial effects of systemic antibiotics could not be demonstrated in the management of the exposure but should be evaluated in case of graft infection.


Asunto(s)
Aumento de la Cresta Alveolar , Implantes Dentales , Aumento de la Cresta Alveolar/efectos adversos , Aumento de la Cresta Alveolar/métodos , Regeneración Ósea , Humanos , Politetrafluoroetileno , Mallas Quirúrgicas/efectos adversos , Titanio
20.
Int J Oral Maxillofac Implants ; 37(2): 289-301, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35476857

RESUMEN

PURPOSE: To evaluate the effects of coarse microcavities added to micron and submicron rough implant surfaces in the implant-bone anchorage in rabbits. MATERIALS AND METHODS: Confocal interferometry was used to quantify roughness. Electron microscopy and energy-dispersive x-rays characterized the surfaces prior to and after implantation. X-ray photoelectron spectroscopy and contact angle determined the surface chemistry and energy, respectively. Fifteen New Zealand White rabbits received, respectively, one cavity-less (C-) and one cavity-rich (C+) implant per femoral condyle and were allowed to integrate for 2 and 8 weeks. The bone-to-implant contact (BIC), bone volume density (BVD), and removal torque (RTQ) were then analyzed. RESULTS: The cavities produced on the surfaces were 48.4 ± 16.8 µm in diameter and 37.8 ± 36.5 µm deep (5.9% ± 1.1% surface coverage). C+ did not alter the surface chemistry or energy. In vivo, C+ implants produced more BIC and RTQ at 8 weeks (P = .002 and P = .059, respectively) and more BVD at 2 and 8 weeks postimplantation (P = .031 and P = .078, respectively). Bone tissue was observed inside the cavities of C+ both histologically and by scanning electron microscopy after implant removal. CONCLUSION: Unevenly distributed coarse cavities within a micron and submicron rough surface allow bone ingrowth and increase implant stability and bone-surface unions in rabbits. These results encourage the design of implants with multilevel surface topographies to improve implant-based regeneration.


Asunto(s)
Implantes Dentales , Oseointegración , Animales , Fémur/cirugía , Conejos , Propiedades de Superficie , Titanio/química
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