scholarly journals Dental implants characteristics, stability and designs

2018 ◽  
Vol 5 (10) ◽  
pp. 4625
Author(s):  
Alaa Almalki ◽  
Mohammed Albati ◽  
Mohammed Alhijaili ◽  
Ahmad Hariri ◽  
Hydar Alnowaisser ◽  
...  
Keyword(s):  
Dental Implants ◽  
Body Shape ◽  
Daily Routine ◽  
Dental Practice ◽  
Implant Stability ◽  
Dental Implantation ◽  
Implant Size ◽  
Natural Teeth ◽  
Considerable Impact

One of the recent advances in the field of dentistry is to provide prothesis that can replace lost natural teeth. Over several decades, researches were endeavouring to create dental implants with optimized criteria that allow long-term function and stability. After notable success, the use of dental implant has become an almost daily routine in dental practice. However, many factors can influence the success of dental implantation procedures. Primary implant stability remains the most reliable predictor of dental implants success, and many factors are known to have a considerable impact on the implant stability such as the thread morphology, the implant size and length, the implant body shape, the surgical technique use, and the underlying bone heath. Knowledge of these factors is essential for optimizing the outcome of dental implantation procedures even in unfavourable conditions. Therefore, this article aims at reviewing and discussing the various dental implants designs, characteristics, and stability.

scholarly journals On the effect of antiresorptive drugs on the bone remodeling of the mandible after dental implantation: a mathematical model

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mehran Ashrafi ◽  
Farzan Ghalichi ◽  
Behnam Mirzakouchaki ◽  
Manuel Doblare
Keyword(s):  
Mathematical Model ◽  
Bone Density ◽  
Bone Remodeling ◽  
Dental Implants ◽  
Implant Design ◽  
Patient Specific ◽  
Dental Implantation ◽  
Antiresorptive Agents ◽  
Antiresorptive Drugs

AbstractBone remodeling identifies the process of permanent bone change with new bone formation and old bone resorption. Understanding this process is essential in many applications, such as optimizing the treatment of diseases like osteoporosis, maintaining bone density in long-term periods of disuse, or assessing the long-term evolution of the bone surrounding prostheses after implantation. A particular case of study is the bone remodeling process after dental implantation. Despite the overall success of this type of implants, the increasing life expectancy in developed countries has boosted the demand for dental implants in patients with osteoporosis. Although several studies demonstrate a high success rate of dental implants in osteoporotic patients, it is also known that the healing time and the failure rate increase, necessitating the adoption of pharmacological measures to improve bone quality in those patients. However, the general efficacy of these antiresorptive drugs for osteoporotic patients is still controversial, requiring more experimental and clinical studies. In this work, we investigate the effect of different doses of several drugs, used nowadays in osteoporotic patients, on the evolution of bone density after dental implantation. With this aim, we use a pharmacokinetic–pharmacodynamic (PK/PD) mathematical model that includes the effect of antiresorptive drugs on the RANK/RANK-L/OPG pathway, as well as the mechano-chemical coupling with external mechanical loads. This mechano-PK/PD model is then used to analyze the evolution of bone in normal and osteoporotic mandibles after dental implantation with different drug dosages. We show that using antiresorptive agents such as bisphosphonates or denosumab increases bone density and the associated mechanical properties, but at the same time, it also increases bone brittleness. We conclude that, despite the many limitations of these very complex models, the one presented here is capable of predicting qualitatively the evolution of some of the main biological and chemical variables associated with the process of bone remodeling in patients receiving drugs for osteoporosis, so it could be used to optimize dental implant design and coating for osteoporotic patients, as well as the drug dosage protocol for patient-specific treatments.

Zirconia Removable Telescopic Dentures Retained on Teeth or Implants for Maxilla Rehabilitation. Three-Year Observation of Three Cases

2010 ◽  
Vol 36 (6) ◽  
pp. 455-465 ◽  
Author(s):  
Gregory-George Zafiropoulos ◽  
Jochen Rebbe ◽  
Ulrich Thielen ◽  
Giorgio Deli ◽  
Christian Beaumont ◽  
...  
Keyword(s):  
Dental Implants ◽  
High Quality ◽  
Prosthetic Reconstruction ◽  
Implant Abutments ◽  
Large Populations ◽  
Cad Cam ◽  
Natural Teeth ◽  
Long Term Studies ◽  
Zirconia Implant

Abstract This report addresses maxillary restoration with removable telescopic crown-retained palatal free dentures. One patient with 7 natural teeth (PERIO), a second patient with 6 dental implants (IMPL), and a third patient with 2 natural teeth and 4 dental implants (IMPL-PERIO) were treated. Zirconia copings for natural teeth and individual zirconia implant abutments were fabricated in CAD/CAM and used as primary crowns. Electroformed gold copings were used as secondary telescopes. All maxilla supraconstructions were fabricated with zirconia and CAD/CAM. Patients were monitored during a 3-year period; all teeth and implants survived, and no biological or mechanical complications occurred. The peri-implant and periodontal conditions were healthy. While recognizing the limitations of this report, results showed that fabricating removable zirconia structures by means of CAD/CAM can yield highly functional and esthetic results. Galvanoforming technology is the preferable means of fabricating secondary crowns. The combination of these techniques and materials results in a prosthetic reconstruction of high quality, good fit, and biocompatibility. Long-term studies of large populations are necessary to investigate the clinical properties of the material utilized in this type of construction.

scholarly journals Augmentation the width of a keratinized attached gingiva in patients with dental implantation

2018 ◽  
pp. 5-15
Author(s):  
T. V. Brailovskaya ◽  
A. P. Vedyaeva ◽  
R. V. Kalinin ◽  
E. A. Garibyan ◽  
Z. A. Tangieva ◽  
...  
Keyword(s):  
Dental Implants ◽  
Soft Tissues ◽  
Scientific Interest ◽  
Mucogingival Surgery ◽  
Dental Implantation ◽  
Attached Gingiva ◽  
Long Term Prognosis ◽  
Dermal Matrices ◽  
Implant Treatment

To date, there has been an increase in the scientific interest in the state of soft tissues surrounding dental implants and their influence on the long-term prognosis of implant treatment. It is known, that the risk factors for the development of periimplantitis include a deficiency or complete absence of an attached keratinized gingiva in the area of implants. The article provides a comparative analysis of various methods of mucogingival surgery in the field of dental implants using free gingival autografts and xenogenic dermal matrices.

scholarly journals Effect of Ultraviolet Irradiation on Osseointegration of Dental Implants: A Comparative Histomorphometric Study in Canine Models

2020 ◽  
Vol 10 (12) ◽  
pp. 4216
Author(s):  
Chunui Lee ◽  
Seung-Mi Jeong ◽  
Hyun-Woo Yang ◽  
Byung-Ho Choi
Keyword(s):  
Dental Implants ◽  
Uv Irradiation ◽  
Experimental Studies ◽  
Canine Model ◽  
The Other ◽  
Implant Stability ◽  
Histomorphometric Study ◽  
Canine Models ◽  
Short And Long Term

Recent studies have focused on achieving sound osseointegration applying methods of surface reprocessing of dental implants using ultraviolet (UV) irradiation. However, there have been few reports on the effect of UV irradiation on osseointegration in both the short and long term, and experimental studies using the canine model do not exist. Therefore, the aim of this study was to determine the short- and long-term degree of osseointegration of dental implants according to UV irradiation using a histometric analysis in canine models. Four beagles were used for this study and 24 dental implants were placed. Six implants were inserted with flapless protocols in each mandible. Half of the implants were UV-irradiated prior to implantation. UV-treated and untreated implants were placed one after the other; implant stability was recorded using the implant stability test (IST) immediately after implantation and every seven days thereafter. Two of the beagles were sacrificed after four weeks and the other two after 12 weeks. The implants were removed in block sections and were evaluated histomorphologically and statistically. As a result, we found no statistically significant differences in the mean IST values and in bone-to-implant contact (BIC) in all groups at 4 and 12 weeks.

A Survey and Analysis to Find Dental Implant Issues in India

2020 ◽  
pp. 263-282
Author(s):  
Suchismita Satapathy
Keyword(s):  
Dental Implants ◽  
Dental Materials ◽  
Ideal Solution ◽  
Missing Teeth ◽  
Manufacturing Method ◽  
Dental Implantation ◽  
Natural Teeth ◽  
Extensive Growth ◽  
Bio Compatibility ◽  
Selection Of

Presently, dental implantations are the ideal solution and best substitute option for missing teeth. Dental implants determined the replacements of root and non-working teeth after the loss of natural teeth. Strengthening dental materials helps to fix the loss teeth. For teeth with root disease and fault in bone density, dental implantation is very essential. While bridge work and dentures decline to reclaim the suitable chewing condition and turn the problem of missing teeth, dental implants trace the solution of missing teeth. For more progress in dental-concerned technology, an extensive growth in dental implants has been noticed during the last several years. So there is a large need of excellent, quality dental materials. The selection of the implant materials, their generation system, manufacturing method, age-long durability, bio compatibility with medical principle, and professional dental field of study are therefore essential.

Marginal Bone Loss Around Implants Supporting Fixed Restorations

2011 ◽  
Vol 37 (5) ◽  
pp. 549-558 ◽  
Author(s):  
Emre Mumcu ◽  
Hakan Bilhan ◽  
Ali Cekici
Keyword(s):  
Bone Loss ◽  
Dental Implants ◽  
Radiographic Evaluation ◽  
Marginal Bone Loss ◽  
Implant Size ◽  
Bone Level ◽  
Marginal Bone Level ◽  
Implant Length

A key criterion of success following dental implants is the marginal bone level. Long-term clinical and radiographic evaluation is necessary to test the results of in vitro studies investigating how cantilevering of restorations or implant size affect bone level changes around implants. There is no consensus on the effect of several variables such as age, gender, implant size, and cantilever prostheses on marginal bone levels around fixed dentures supported by dental implants. Patients who received cemented, fixed restorations supported by implants and who were examined in routine recall sessions 6, 12, 24, and 36 months after loading were included in the study group. Comparative bone level measurements were obtained from images of radiographs at ×20 magnification using the CorelDraw 11.0 software program. Statistical analysis was performed using the Student t test and 1-way analysis of variance. In the 36-month observation period, there were no incidences of implant failure, excessive bone loss around implants, or peri-implant inflammation. One hundred twenty-six implants in 36 patients were evaluated, and the effect of several factors on marginal bone loss (MBL) during the 36 months after loading was analyzed statistically. There was no significant relationship between MBL and implant length or diameter, whereas age, gender, and cantilevers affected bone loss rates. MBL was elevated in older and female patients as well as in patients who received cantilevers. In cases of limiting anatomic conditions, short and/or narrow implants should be preferred over cantilever extensions.

Vitamin D Effects on Guided Bone Regeneration and Osseointegration of Dental Implants (Literature Review)

2020 ◽  
Vol 75 (5) ◽  
pp. 552-560
Author(s):  
Sergey Yu. Ivanov ◽  
Svetlana Yu. Kalinchenko ◽  
Nidjat A. Guseynov ◽  
Aleksander A. Muraev ◽  
Aigul Т. Safi ◽  
...  
Keyword(s):  
Vitamin D ◽  
Bone Tissue ◽  
Dental Implants ◽  
Scientific Data ◽  
Reparative Regeneration ◽  
Jaw Bone ◽  
Dental Implantation ◽  
Oral Reconstruction ◽  
Phosphate Exchange ◽  
Regeneration Of Bone

Background.Due to the prevalence of Vitamin D deficiency as well as the frequency of reconstructive surgical interventions followed by dental implantation, the issue arises concerning the effect of Vitamin D on reparative regeneration of bone and osseointegration of dental implants.The purpose using literature data we are conducting an impact assessment of vitamin D on reparative regeneration of bone tissue, in particular, after oral reconstruction surgeries and dental implantation.Methods.Retrieval, systematization and analysis of scientific data on application of vitamin D supplementation and its effect on reparative regeneration of jaw bone tissue.The conclusions.For the most part, the positive effect exerted on reparative regeneration of jaw bone tissue and osseointegration of dental implants is due to the role of vitamin D in physiological processes evolving in bone tissue, namely maintenance of calcium and phosphate exchange through intestinal absorption and TNF, RANKL (Receptor activator of nuclear factor kappa-B ligand) and consequently differentiation of precursors to osteoclasts into osteoclasts through VDR stimulation (VitaminD Receptor) receptors for further osteogenesis. Also, according to literature data, FGF23 (Fibroblast Growth Factor) protein is a marker of osteoblasts differentiation into osteocytes, it is also known that FGF23 and 1,25(ОН)2D3 are genetically related. FGF23 is the main regulator of both phosphate exchange in bones and metabolism of vitamin D and its metabolites. Besides, indirect anti-inflammatory effect has been observed thanks to inhibition of pro-inflammatory cytokine secretion. Taking into account the abovementioned data, of particular relevance is the definition of serum concentration 25(ОН)D and development of schemes of vitamin D level pre-surgery correction in patients, who have to undergo oral reconstruction surgeries and dental implantation. Mass spectrometry is a promising diagnostic method for determining the level of vitamin D in a body, as it allows to identify the actual amount of vitamin D free from admixture of other steroid hormones. The introduction of this method into clinical practice will allow to monitor the level of vitamin D in patients, receiving reconstructive and rehabilitative treatment.

Cytomorphometric characteristics of imprints of the contact area between the gingiva and the dental implant after one-step implantation

2017 ◽  
pp. 77-82
Author(s):  
А.С. Рыбалко ◽  
А.С. Григорьян ◽  
А.А. Орлов
Keyword(s):  
Dental Implants ◽  
Dental Implant ◽  
Contact Area ◽  
Inflammatory Reactions ◽  
Diagnosis And Prognosis ◽  
Dental Implantation ◽  
Data Points ◽  
One Step ◽  
Cytological Method ◽  
Clinical Pictures

Цель исследования состояла в разработке неинвазивного метода диагностики состояния тканей периимплантационной зоны после постановки дентальных имплантатов, а также прогноза течения послеоперационного периода и ранней диагностики послеоперационных осложнений, таких, как мукозит и периимплантит, при одноэтапном методе дентальной имплантации. Методы. В исследовании представлена цитологическая характеристика отпечатков из области контакта имплантата с десной, в которых оценивали состояние эпителиальных клеток при различных проявлениях цитопатологии. Определяли индекс деструкции (ИД) и воспалительно-деструктивный индекс (ВДИ) в клетках воспалительного инфильтрата, которые сопоставляли с клинической картиной течения послеоперационного периода. Сроки забора цитологического материала 1, 5, 15, 25, 30, 60, 120 дней после постановки имплантатов. Количество исследованных цитограмм - 442 от 11 пациентов (по 1-2 имплантата). Общий массив использованных для вычисления интегральных показателей составил »2550. Результаты. Было установлено, что в сроки 1-5 дней после постановки дентальных имплантатов происходит резкое повышение показателей ИД (до 7500 ± 15) и ВДИ (до 80 ± 20), что отражает процесс развития в области имплантатов острых воспалительных реакций. В отдаленные сроки наблюдений отмечалось 2 варианта развития событий. Первый из них характеризовался сохранением во все сроки высоких показателей ИД и ВДИ. Для второго варианта динамики показателей было характерно их падение, что соответствовало развитию процесса остеоинтеграции дентальных имплантатов. The objectives of the investigation were to develop protocols evaluating the validity and effectiveness of the cytological method for diagnosis and prognosis of tissue conditions adjacent to a dental implant. Methods. This study examined the cytological characteristics of imprints of the gingiva-implant contact area, a. the correlation of quantitative ratios of epithelial cells either with or without hystopathological manifestations (an index of destruction, ID); b. ratio of cells of the inflammatory infiltrate (an inflammatory and destructive index, IDI); these data were researched in relation with dynamics of the clinical pictures during a postoperative period.The cytological material was obtained 1, 5, 15, 25, 30, 60, 120 days after dental implantation. Totally 442 cytogramme from 11 patients (1-2 implant per a patient) were assayed. The data array for computation of integrated indicators was composed of ca. 2550 data points. Results. A significant increase of ID (7500 ± 15) and IDI (80 ± 20) indicators, which reflects the development of acute inflammatory reactions in tissues neighboring an implant, was observed within 1-5 days following the insertion of dental implants. Long-term observations revealed two scenarios. The first scenario was characterized by the retention of high levels of ID and IDI over the period of observations. The second scenario featured the reduction of ID and IDI indices, which corresponded to the development of the osseointegration of dental implants.

Microbial contamination dynamics in surgical treatment of patients using dental implants in a limited bone tissue volume

2019 ◽  
pp. 52-58
Author(s):  
A.M. Tsitsiashvili ◽  
A.M. Panin ◽  
Ye.N. Nikolayeva ◽  
A.A. Arutyunyan ◽  
M.S. Podporin ◽  
...  
Keyword(s):  
Bone Tissue ◽  
Dental Implants ◽  
Bacteriological Study ◽  
Number Of Species ◽  
Dental Implantation ◽  
Multi Stage ◽  
Short Implants ◽  
Amoxicillin Clavulanate ◽  
Pure Cultures ◽  
Step Therapy

The aim of the study was to evaluate the effectiveness of antibiotic chemotherapy regimens and the dynamics of the nature of microbial associations of the operating area at the surgical stages of treatment of patients using dental implants in conditions of limited bone tissue. The study involved 37 patients (17 m and 20 w, from 32 to 68 years). According to the tactics of the treatment and the type of antibacterial effect, the patients were divided into 3 groups. Per os was prescribed antibiotics as a step therapy: amoxicillin (flemoxin 500 mg 1 tablet 2 per day for 7 days) and amoxicillin / clavulanate (flemoclav 625 mg 1 table 2 per day 7 days), doxycycline (unidox 100 mg 1 table 1 per day 5 days). The 1st group of patients (n1=12; 31.9%) — a multi-stage approach (MA), where the 1st operation is bone grafting (BG) (Flemoxin 500 mg), after 6—9 months, the 2nd dental implantation (DI) (flemoklav 625 mg), after 3—6 months the 3rd — installation of gingival formers (GF) (unidox 100 mg). The 2nd group of patients (n2=14; 36.2%) — a one-stage approach (OA), where the 1st operation is BG with simultaneous DI (flemoxin 500 mg), after 6—9 months — the 2nd — installation of GF (flemoklav 625 mg). 3rd group — narrow/short implants (N/S) without BG were installed (n3=11; 31.9%). The 1st operation — DI (Flemoxin 500 mg), the 2nd — installation of GF (Flemoklav 625 mg). A bacteriological study with the identification of pure cultures of bacteria and determination of sensitivity to antibacterial drugs was performed for all patients before treatment and in dynamics. In MA, there was a suppression of the growth of certain types of bacteria and an increase in the number of species resistant to this antibiotic. In the framework of the OA, when prescribing antibiotics, the results were comparable. With N/S implants, growth inhibition of a number of species present at the beginning of treatment was noted. In multi-stage operations, we consider it reasonable to use beta-lactamase-protected drugs, or drugs of another group that include representatives of parodontopathogenic species and potential carriers of multiple resistance genes in their spectrum of action.

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