Dental implants in aesthetic zone – cases report

2021 ◽  
Vol 12 (47) ◽  
pp. 46-54
Author(s):  
Adel Martínez ◽  
Ángel Yamith Sánchez ◽  
Samuel Urbano Del-Valle
Keyword(s):  
Bone Regeneration ◽  
Dental Implants ◽  
Dental Implant ◽  
Traditional Approach ◽  
Dental Extraction ◽  
Insertion Torque ◽  
Second Phase ◽  
Central Incisor ◽  
The Aesthetic ◽  
Preservation Technique

Placement of dental implants in the aesthetic zone needs to be planned to consider both atraumatic tooth extraction and the preservation of the socket. The authors presented two clinical cases of patients with indication of dental extraction of the upper central incisor which was planned to use a two-armed lever as atraumatic alveolar preservation technique and managed in two different ways. Case one referred to a traditional approach that included dental extraction, guided bone regeneration, and provisionalization, with a period of healing of 6 months to enable the bone regeneration. Subsequently, it was placed a dental implant TSV 3.7*13 mm (Zimmer Dental). Five months after of clinical and radiographic controls, the second phase was started with the rehabilitation. The second case was about a patient who required dental extractions of maxillary left central incisor due to a fracture of the crown with a poor prognosis, in which the dental extraction was planned to use a two-armed lever. After reclassifying the fresh socket, a dental implant TSV of 3.7 x 13 mm (Zimmer Dental) was placed with modified drilling technique, implant placement resulted in primary fixation with insertion torque level lower than 30 Ncm so the immediate load was not performed. Both patients received a ceramic crown with functional and esthetic results after 16 months of continuous checks and controls. It was concluded that the alveolar preservation in the aesthetic zone is a strategy that starts from the extraction technique. The authors recommend the two-armed lever as atraumatic alveolar preservation technique and different ways to place dental implants.

scholarly journals The effect of platelet-rich fibrin on the acceleration of osteoblast proliferation after endosseous dental implant insertion

2020 ◽  
Vol 6 (1) ◽  
pp. 55
Author(s):  
Evan Chandra ◽  
Suparyono Saleh ◽  
Murti Indrastuti
Keyword(s):  
Bone Regeneration ◽  
Dental Implants ◽  
Dental Implant ◽  
Wistar Rats ◽  
Control Group ◽  
Osteoblast Proliferation ◽  
Platelet Rich Fibrin ◽  
Anova Test ◽  
Implant Bed ◽  
Post Hoc

The osseointegration process of dental implants begins with osteoblast differentiation and proliferation, which is an important aspect of the bone regeneration process. Platelet-rich fibrin (PRF) is a platelet that contains a large amount of fibrin and growth factor, which is widely used to accelerate bone regeneration. This study aims to determine the effect of PRF on the acceleration of osteoblast proliferation after endosseous dental implant insertion. Twelve male Wistar rats weighing 250 to 300 gr of 8 to 15 weeks as an animal model were divided into two groups, the control group and treatment group, based on days and PRF treatment. Three ml of Wistar rat blood was obtained and centrifuged for 12 minutes at a speed of 2700 rpm to make PRF. Afterward, platelet-rich fibrin was applied to implant bed, and the dental implant was inserted at the lateral epicondyle of the right femur in 3 mm depth and 1.8 mm diameter dimension. Incontrol groups, dental implants were immediately inserted after implant bed preparation without PRF administration. Observation of the Wistar rats was carried out on days 14 and 28 for each group. The rats were terminated accordingto the timeline of group design. The epicondylus lateralis femoris dextra bone of the rats was taken and fixed with 10% buffered formalin solution. Then, histological samples were made with hematoxylin-eosin staining. Sample observation was done under a light microscope to calculate the number of osteoblasts. The data were analyzed using the two-way ANOVA test, followed by LSD post hoc test. Based on the two-way ANOVA test, there was a significant difference between control groups and treatment groups (p<0.05), and there were significant differences between the observation result of days 14 and 28 (p<0.05). The application of PRF increased osteoblast proliferation for the first 14 days, but the rate decreased after that. Based on the LSD post hoc test, there were differences in osteoblast proliferation between the treatment and control group (p<0.05). Thus, it is concluded that platelet-rich fibrin increased the acceleration ofosteoblast proliferation after endosseous dental implant insertion.

Effect of Varying Diameter of Dental Implants During Placements in Compromised Bony Ridges at Different Insertion Torques: A Finite Element Study

2014 ◽  
Author(s):  
Imran Aziz ◽  
Waleed A. Khan ◽  
Faisal Moeen ◽  
Imran Akhtar ◽  
Wasim Tarar
Keyword(s):  
Finite Element ◽  
Dental Implants ◽  
Dental Implant ◽  
Three Dimensional ◽  
Solution Procedure ◽  
Insertion Torque ◽  
Modeling And Analysis ◽  
Stress And Deformation ◽  
Three Dimensional Finite Element ◽  
Implant Loading

The life of dental implant depends on various parameters such as insertion torque, implant diameter and cortical and cancellous bones thickness. The thickness of the cortical and cancellous bones varies from patient to patient and for each thickness, the corresponding studies are required to determine the favorable implant loading. In this study, stress analysis on various dental implant fixtures inserted in compromised bony ridges is performed using three dimensional finite element analyses. Initially, the modeling and analysis of previously analyzed structure is done to validate the solution procedure. After successful validation, three dimensional linear elastic analysis of bone implant bone assembly is performed. The implant material is treated as isotropic whereas the bone materials are taken as anisotropic materials. The parametric study finds the effect of insertion torque and variation of implant diameter on stress induced in the compromised bony ridge. Further, the implant bone assembly was analyzed using various cortical bone thicknesses. It has been observed that the increase in torque results in increased stress and deformation in the bone. With increasing bone thickness, the similar variation of torque produces less stress and deformation in dental implants. The study is helpful in prediction of favorable implant loading and implants diameters for compromised bony ridges. The study provides useful knowledge in improving the performance and life of dental implants.

scholarly journals Does the systemic administration of l-arginine affect dental implant stability in nicotine consumer dogs?

2021 ◽  
Vol 43 (1) ◽  
Author(s):  
Bijan Movahedian ◽  
Mansour Rismanchian ◽  
Hooman Navaei ◽  
Saeid Tavanafar ◽  
Soheil Koushaei
Keyword(s):  
Dental Implants ◽  
Dental Implant ◽  
Primary Stability ◽  
Insertion Torque ◽  
Implant Stability ◽  
Consumer Group ◽  
Value Analysis ◽  
Significant Difference ◽  
Group 2 ◽  
Arginine Supplementation

Abstract Background Nicotine can have detrimental effects on dental implant osseointegration. This study aimed to evaluate the influence of systemic l-arginine supplement on the osseointegration of dental implants in nicotine consumer dogs. Methods Twelve 1-year Labrador Retriever dogs had their right and left third and fourth mandibular premolars removed, and the sockets were left to heal for 6 months. Dogs were randomly divided into three groups (n = 16): group 1—0.2 mg/kg nicotine was injected twice daily; group 2—0.2 mg/kg nicotine was injected twice daily in addition to 200 mg/kg l-arginine capsules taken orally; and group 3—placebo. Forty-eight dental implants were inserted into the healed sockets of the dog’s mandible and were assessed by implant stability quotient (ISQ) using resonance frequency analysis (RFA) during 4 weeks and insertion and removal torque value analysis. Results No implant failure occurred during the study period. The change in torque value between insertion and removal was similar in the placebo and nicotine+arginine consumer dogs (p = 0.276), which shows a positive effect of arginine supplementation in nicotine consumers. There was a significant difference in torque value change between nicotine+arginine vs. nicotine consumers (p = 0.049) and placebo vs. nicotine (p = 0.003). After 4 weeks, the placebo had the most significant improvement in torque value (47.0 ± 16.9), followed by nicotine+arginine (25.1 ± 37.8), and the worst torque value was for the nicotine group (− 5.7 ± 24.0) pound per inch. The results show that except in the first week, there are significant differences in ISQ between the groups in different periods. ISQ in all of the groups has reduced at first but then increased over time. At the time of implant placement, insertion torque was significantly higher in the nicotine consumer group than the nicotine+arginine consumer group and placebo group (p = 0.020). Conclusion Arginine supplementation promotes bone healing and implant primary stability by improving dental implant osseointegration biomechanical characteristics.

scholarly journals Orthodontic extrusion and implant site development: two case reports

2014 ◽  
Vol 17 (4) ◽  
pp. 125 ◽  
Author(s):  
Maria Ângela Lacerda Esper ◽  
Ana Carolina Salvia ◽  
Maria Tereza Pedrosa Albuquerque ◽  
Nelson Luiz Macedo
Keyword(s):  
Dental Implant ◽  
Root Resorption ◽  
Case Reports ◽  
Clinical Event ◽  
Central Incisor ◽  
Occlusal Contact ◽  
Site Development ◽  
Implant Placement ◽  
The Aesthetic ◽  
Orthodontic Extrusion

<p style="margin: 0cm 0cm 0pt; text-align: justify; line-height: 200%; -ms-text-justify: inter-ideograph;"><span style="line-height: 200%; font-family: 'Arial','sans-serif'; font-size: 12pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US;" lang="EN-US">The aim of this study was to report two cases of orthodontic extrusion performed prior to dental implant placement. The first one reports the case of a 57 year-old-female who presented internal root resorption in the left central incisor, and orthodontic extrusion of this element was indicated. The treatment lasted 24 weeks. At the end of this period, the dental implant was placed. The second clinical event refers to a patient of 66 years of age who had vertical fracture in the left central incisor. In this case, the orthodontic extrusion was conducted in 12 weeks. At the end of this period, the dental implant was placed and also the temporary crown, but without occlusal contact. Both cases reported consisted of the involvement of the left central incisor in the aesthetic area and low bone density. The cases reported demonstrated that orthodontic extrusion is a viable alternative to the aesthetic and functional reconstruction with prosthesis over dental implants.</span></p>

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.

A STUDY ON CLINICAL AND X - RAY FEATURES OF PARTIALLY&NBSP; EDENTULOUS PATIENTS WITH DENTAL IMPLANT

2011 ◽  
pp. 96-103
Author(s):  
Quang Hai Nguyen ◽  
Toai Nguyen
Keyword(s):  
Dental Implants ◽  
Dental Implant ◽  
Tooth Loss ◽  
Permanent Teeth ◽  
Missing Teeth ◽  
X Ray ◽  
Lower Jaw ◽  
Molar Teeth ◽  
Edentulous Patients ◽  
Missing Tooth

1. Background: Loss of permanent teeth is very common, affected chewing function, speech and aesthetics; restoration of missing teeth with dental implant has several advantages, but we need thoroughly study the clinical and X ray features at the position at missing teeth, then to select the type of implant and make the best plan for the dental implant patients. 2. Materials and method: Cross-section descriptive study. From January 2009 to November 2010, study with 56 patients with 102 implants of MIS and Megagen systems at the Faculty of Odonto-Stomatology, Hue College of Medicine and Pharmacy and Vietnam-Cuba Hospital in Ha Noi. 3. Results: Distributed equally in male and female, common ages 40 – 59 (55,4%), the majority of missing teeth occurs in the lower jaw (63,8%) and especially, the teeth 36 and 46 (25,4%). The majority of missing teeth due to dental caries, dental pulp and apical diseases (64,7%) of the molar teeth (51,9%); the most position of missing tooth have enough bone for dental implants (87,3%), time of tooth loss and bone status in the position of tooth loss are related to each other (p < 0,01). Diameter and length of implant usually used 4.0 – 6.0 mm (63,7%) and 8.5 – 13.0 mm (83,3%). 4. Conclusion: Clinical and X ray features of edentulous patients has an important role in determining the type of implants and treatment planning of dental implants. Key words: Loss of permanent teeth, X ray and clinical features, Dental implant.

scholarly journals Dental implant placement with inferior alveolar nerve repositioning in severely resorbed mandibles: a retrospective multicenter study of implant success and survival rates, and lower lip sensory disturbances

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
George Deryabin ◽  
Simonas Grybauskas
Keyword(s):  
Dental Implants ◽  
Dental Implant ◽  
Healing Process ◽  
Survival Rates ◽  
Inferior Alveolar Nerve ◽  
Reliable Technique ◽  
Lower Lip ◽  
Neurosensory Disturbances ◽  
Sensory Disturbances

Abstract Background The purpose of this study was to analyze medium-to-long-term implant success and survival rates, and lower lip sensory disturbance after placement of dental implants with simultaneous inferior alveolar nerve (IAN) repositioning. Methods Fifteen patients (3 men, 12 women) treated in two centers were included in this retrospective study. The ages of the participants ranged from 19 to 68. A total of 48 dental implants were placed in 23 posterior mandibular segments simultaneously with IAN transposition or lateralization. The residual bone above the IAN ranged from 0.5 to 7.0 mm. Crestal bone changes were measured using cone beam computed tomography (CBCT) images. Disturbance of the IAN was evaluated subjectively using a modified questionnaire. Results The healing process was uneventful in fourteen patients. In one patient, spontaneous fracture of the operated mandible occurred on tenth day after the surgery. The implant in the fracture line was removed at the time of open reduction and fixation. One more implant was lost after 5 years of loading. Therefore, the overall dental implant survival rate was 95.8%, whereas all implants in function were judged as successful after a follow-up period of 1 to 10 years. Transient neurosensory disturbances (ND) were observed in all patients who underwent IAN lateralization and IAN transposition. At follow-up times of 3 years, 5 years, and 10 years, weak hypoesthesia remained in two subjects treated with IAN transposition. None of the patients developed neuropathic pain after the procedure. Conclusions Within the limitations of this study, we conclude that reconstruction of severely resorbed mandibles with dental implants in conjunction with IAN repositioning is an effective and reliable technique. Although neurosensory disturbances are the most common complication after surgery, they tend to resolve over time. Advanced surgical skills are required to perform this technique.

scholarly journals Comparative radiographic and resonance frequency analyses of the peri-implant tissue after dental implants placement using flap and flapless techniques: An experimental study on domestic pigs

2013 ◽  
Vol 70 (6) ◽  
pp. 586-594 ◽  
Author(s):  
Zoran Vlahovic ◽  
Branko Mihailovic ◽  
Zoran Lazic ◽  
Mileta Golubovic
Keyword(s):  
Bone Resorption ◽  
Resonance Frequency ◽  
Dental Implants ◽  
Dental Implant ◽  
Surgical Techniques ◽  
Primary Stability ◽  
Implant Stability ◽  
Domestic Pigs ◽  
Flap Technique ◽  
Implant Placement

Background/Aim. Flapless implant surgery has become very important issue during recent years, mostly thanks to computerization of dentistry and software planning of dental implants placements. The aim of this study was to compare flap and flapless surgical techniques for implant placement through radiographic and radiofrequency analyses. Methods. The experiment was made in five domestic pigs. Nine weeks following domestic pigs teeth extraction, implants were placed, on the right side using surgical technique flap, and flapless on the left side. Digital dental Xrays were applied to determine primary dental implant stability quality (ISQ). At certain intervals, not later than three months, the experimental animals were sacrificed, and just before it, control X-rays were applied to measure dental implants stability. Results. Radiographic analysis showed that peri-implant bone resorption in the first 4 weeks following placement implants with flap and flapless surgical techniques was negligible. After the 3 months, mean value of peri-implant bone resorption of the implants placed using flap technique was 1.86 mm, and of those placed using flapless technique was 1.13 mm. In relation to the primary dental implant stability in the first and second week there was an expected decrease in ISQ values, but it was less expressed in the dental implants placed using the flapless technique. In the third week the ISQ values were increased in the dental implants placed by using both techniques, but the increase in flapless implant placement was higher (7.4 ISQ) than in flap implant placement (1.5 ISQ). The upward trend continued in a 4- week period, and after 3 months the dental implant stability values in the implants placed using flap technique were higher than the primary stability for 7.1 ISQ, and in the implants placed using flapless technique were higher comparing to the primary stability for 10.1 ISQ units. Conclusion. Based on the results of radiographic and resonance frequency analyses it can be concluded that the flapless technique in surgical implants placemat, leads to better results.

Sign in / Sign up

Export Citation Format

Share Document