scholarly journals Treatment of Full and Partial Arches with Internal-Conical-Connection Dental Implants: Clinical Results after 5 Years of Follow-Up

2020 ◽  
Vol 10 (23) ◽  
pp. 8709
Author(s):  
Diego Lops ◽  
Riccardo Guazzo ◽  
Alessandro Rossi ◽  
Antonino Palazzolo ◽  
Vittorio Favero ◽  
...  
Keyword(s):  
Bone Loss ◽  
Dental Implants ◽  
Clinical Results ◽  
Marginal Bone Loss ◽  
Significant Difference ◽  
Distal Aspect ◽  
The Stability ◽  
Maxilla And Mandible ◽  
Implant Loading

The aim of the present investigation is to evaluate the implant therapy outcomes over a period of 5 years and to analyze several patient risk factors influencing the stability of the peri-implant tissues. Seventy-eight patients were consecutively treated between 2009 and 2017 and restored with implant-supported fixed prostheses. The following inclusion criteria were considered: partial or complete edentulism; residual bone volume of at least 3.3 mm in diameter and 8 mm in length; a favorable relationship between maxilla and mandible; at least a minimum 5 year follow-up for each implant included in the statistical analysis. Intraoral radiographs were taken at implant loading and every 12 months during the follow-up visits. They were subsequently stored on a personal computer and analyzed to determine the changes in bone level. Seventy-eight patients receiving 209 implants completed a minimum follow-up period of 5 years. One-hundred dental implants were inserted in the maxilla while 109 were placed in the mandible. Eleven (14.1%) out of 78 treated patients who received 29 (13.9%) dental implants were considered as drop-outs. On the whole, peri-implantitis was diagnosed in three implants. The average final pocket probing depth at implant level was 2.5 ± 1.2 mm. The average final bone loss after 5 years was 0.3 ± 0.4 mm, both at the mesial and distal aspect of the implant. The effects of the prosthesis type, sex and implant site did not statistically influence the marginal bone loss; on the contrary, a statistically significant difference regarding marginal bone loss was detected between smoker and non-smoker patients (p = 0.021). Implants with internal-conical abutment connection showed stable peri-implant bone levels at the medium-term follow-up. Nevertheless, further prospective long-term clinical studies are necessary to confirm these data.

scholarly journals A pilot study on immediate loading dental implants

2021 ◽  
Vol 3 (2) ◽  
pp. 73-77
Author(s):  
Sandeep Mithapara ◽  
Setu P. Shah ◽  
Deval Mehta ◽  
Sonal Madan ◽  
Ekta Mistry
Keyword(s):  
Bone Loss ◽  
Dental Implants ◽  
Immediate Loading ◽  
Marginal Bone Loss ◽  
Extraction Socket ◽  
Extraction Site ◽  
Significant Difference ◽  
Implant Crown ◽  
Distal Aspect

Evolution in the field of dental implantology made the replacement of missing tooth easy and quick. During initial phase of evolution, there was a need of 3 to 6 months of healing period to get teeth on implants but with advancement of technology and research, immediate replacement of missing teeth without waiting period could become a possibility. To access the efficacy of immediate loading in dental implantology using Hexacone® (IHDE DENTAL - Switzerland) dental implant. The objectives were to evaluate pain, infection, recession, loosening of abutment, fracture of implant/crown, de-cementation, peri-implant radiolucency, and marginal bone loss. Five patients (3 male and 2 female) who needed teeth replacement were included in the study. Among 5 patients, 3 patients needed single tooth replacement and the remaining 2 needed segmental replacement. Out of 7 implants 6 implants were placed in the healed bone and 1 was placed in the extraction socket. In case of healed bone, permanent prosthesis were given on 3 day. In case of extraction site, temporary acrylic crown was given on 2 day, which was replaced by permanent prosthesis after 3 month. These patients were evaluated at 7 day, 1 month, 3 months, 6 months and 12 months clinically and radiographically. Infection, prosthetic problems, peri-apical radiolucency, and implant mobility were not observed and marginal bone loss was observed during follow-up periods. On 6 months follow up, 0.5mm and 0.45mm marginal mean bone loss was observed on mesial and distal aspect respectively whereas the same was 1.24mm and 1.14 mm on 12 months follow-up respectively.The immediate loading for dental implants is a successful procedure that decreases the time for the patients to obtain a final restoration satisfying both esthetical and functional problems. Immediately loaded implants survive equally well in extraction socket. No significant difference was seen in survival when implants were placed in healed bone and extraction socket.

scholarly journals Evaluation of crestal bone resorption around cylindrical and conical implants following 6 months of loading: A randomized clinical trial

2017 ◽  
Vol 11 (03) ◽  
pp. 317-322 ◽  
Author(s):  
Naser Sargolzaie ◽  
Hamid Reza Arab ◽  
Marzieh Mohammadi Moghaddam
Keyword(s):  
Bone Loss ◽  
Chi Square ◽  
Pocket Depth ◽  
Significance Level ◽  
Crestal Bone Loss ◽  
Significant Difference ◽  
Chi Square Test ◽  
Male Patients ◽  
Maxilla And Mandible

ABSTRACT Objective: The purpose of this clinical study was to evaluate the effect of implant body form (cylindrical and conical implants) on crestal bone levels during 6 months' follow-up after loading. Materials and Methods: A total of 32 SPI implants (19 conical implants/13 cylindrical implants) were randomly placed in 12 male patients using a submerged approach. None of the patients had compromising medical conditions or parafunctional habits. Periapical radiographs using the parallel technique were taken after clinical loading and 6 months later. Clinical indices including pocket depth and bleeding on probing (BOP) were recorded on 6-month follow-up. Data were analyzed by independent samples t-test and Chi-square test with a significance level of 0.05. Results: Six months after loading, crestal bone loss was 0.84 (±0.29) mm around the cylindrical implants and 0.73 (±0.62) mm around the conical types, which was not significantly different (P = 0.54). Pocket depth around the cylindrical and conical implants was 2.61 (±0.45) mm and 2.36 (±0.44) mm, respectively (P = 0.13). BOP was observed among 53.8% and 47.4% of the cylindrical implants and conical (P = 0.13). Bone loss and pocket depth in the maxilla and mandible had no significant difference (P = 0.46 and P = 0.09, respectively). Conclusion: In this study, although bone loss and clinical parameters were slightly higher in the cylindrical implants, there was no significant difference between the conical- and cylindrical-shaped implants.

scholarly journals Trends of Implant Placement in Relation to Crestal Bone Level in a Private Dental Institute

2020 ◽  
Vol 11 (SPL3) ◽  
pp. 358-362
Author(s):  
Rinieshah Nair R Baskran ◽  
Rajendra Prabhu Abhinav ◽  
Murugaiyan Arun ◽  
Balaji Ganesh S
Keyword(s):  
Bone Loss ◽  
Dental Implants ◽  
P Value ◽  
Marginal Bone Loss ◽  
Oral Rehabilitation ◽  
Implant Placement ◽  
Significant Difference ◽  
Bone Level ◽  
Natural Dentition ◽  
Bone Height

Dental implants provide a strong foundation for fixed or removable prosthetic teeth that are made to match natural dentition. It has become an ideal method of oral rehabilitation after missing natural dentition has been recognised as a reliable tool for dental reconstruction and aesthetics. Marginal bone loss is characterized by a reduction in bone loss is characterized by a reduction in bone level both vertically and horizontally. The levels at which dental implants are placed include sub-crystal, equi-crestal, and supra-crestal. The crestal levels affect bone height significantly. Failure to do so will lead to peri-implant bone loss which will affect the implant function and ultimately implant failure. A retrospective study was conducted based on a university setting. 615 patients with 1141 implant sites were reviewed from June 2019 to March 2020. Excel tabulation and SPSS analysis were done for data analysis. There was a statistically significant difference between the variables that included tooth region, crestal relation and site (jaw)—[p-value<0.05] The most common crestal relation of implant placement is equi-crestal implant placement. The assessment of trends of implant placement in relation to crestal bone level shows that equi-crestal implant is the most preferred crestal relation of implant placement in Saveetha Dental College.

Evaluation of proximal bone loss around 2 commercial brands of SLA-surfaced implants and investigating possible effective factors

2020 ◽  
Author(s):  
Abbas Karimi ◽  
Nahid Azizimoghadam ◽  
Elahe Soltanmohamadi Borujeni
Keyword(s):  
Bone Resorption ◽  
Bone Loss ◽  
Dental Implants ◽  
Clinical Success ◽  
Pearson Correlation ◽  
Marginal Bone Loss ◽  
Effective Factors ◽  
Preprosthetic Surgery ◽  
Dental Implantation ◽  
Significant Difference

Introduction: The long term clinical success of dental implants depends on the stability of crestal bone level. Different dental implantation systems focus on micro-and macro-design to reduce late bone resorption. The purpose of this study was to evaluate bone loss at the proximal (mesial and distal) surfaces of SLA implants from 2 different companies. Materials and Methods: This retrospective cross-sectional study was done on 48 patients receiving 161 SLA-surfaced (Straumann and Dentium) dental implants. The marginal bone loss was measured at mesial & distal sides of the implants on peri-apical X-ray images. The effective factors considered in this study were patients age, implant brand, time passed from fixture placement, preprosthetic surgery and type of prosthetic treatment that were obtained from patient records & interviews. Results: Average mesial and distal bone loss was 1.50±1.359 and 1.517±1.3465 respectively. Pearson correlation coefficient indicates that 1) time passed from fixture placement, 2) commercial brand, 3) history of pre-prosthetic surgery and 4) age affected the amount of bone loss. Conclusion: SLA-surfaced dental implants showed an acceptable amount of bone resorption and no statistically significant difference was observed between commercial brands.

scholarly journals Digital Smile Designed Computer-Aided Surgery versus Traditional Workflow in “All on Four” Rehabilitations: A Randomized Clinical Trial with 4-Years Follow-Up

2021 ◽  
Vol 18 (7) ◽  
pp. 3449
Author(s):  
Francesca Cattoni ◽  
Luca Chirico ◽  
Alberto Merlone ◽  
Michele Manacorda ◽  
Raffaele Vinci ◽  
...  
Keyword(s):  
Bone Loss ◽  
Computer Aided Design ◽  
Immediate Loading ◽  
Time Interval ◽  
Marginal Bone Loss ◽  
Traditional Group ◽  
Post Surgery ◽  
Significant Difference ◽  
Computer Aided

The aim of the present study was to evaluate and compare the traditional “All on Four” technique with digital smile designed computer-aided “All on Four” rehabilitation; with a 4-years follow-up. The protocol was applied to a total of 50 patients randomly recruited and divided in two groups. Digital protocol allows for a completely virtual planning of the exact position of the fixtures, which allows one to perform a flapless surgery procedure with great accuracy (mini-invasive surgery) and also it is possible to use virtually planned prostheses realized with Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM) (methods for an immediate loading of the implants. After 4 years from the treatments 98% of success were obtained for the group of patients treated with the traditional protocol and 100% for the digital protocol. At each time interval a significant difference in peri-implant crestal bone loss between the two groups was detected; with an average Marginal Bone Loss (MBL) at 4 years of 1.12 ± 0.26 mm in the traditional group and 0.83 ± 0.11 mm in the digital group. Patients belonging to the digital group have judged the immediate loading (92%), digital smile preview (93%), the mock-up test (98%) and guided surgery (94%) as very effective. All patients treated with a digital method reported lower values of during-surgery and post-surgery pain compared to patients rehabilitated using traditional treatment. In conclusion, the totally digital protocol described in the present study represents a valid therapeutic alternative to the traditional “All on Four” protocol for implant-supported rehabilitations of edentulous dental arches.

scholarly journals The Difference of Marginal Bone Preservation between Dental Implants with Non-Threaded or Micro-Threaded Collar Designs

Coatings ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1232
Author(s):  
Mazen Almasri
Keyword(s):  
Bone Loss ◽  
Dental Implants ◽  
P Value ◽  
Marginal Bone Loss ◽  
Significant Difference ◽  
Bone Preservation ◽  
The Mean ◽  
The Difference ◽  
Implant System ◽  
Metal Show

This study analyzes the marginal bone loss (MBL) among dental implants characterized with non-threaded collar design (NT) when compared to the more classic micro-threaded collar design (MC) as such might reflect the future dentogengival esthetics, implant metal show, and mucositis. A total of 112 patients who received 311 implants have been included in the study and analyzed for their postoperative MBL using sequential periapical radiographs. The prevalence of postoperative peri-implant mucositis was recorded as well. The periapical radiographic comparison was performed between the immediate postoperative record and at the 24-month recall visit. Among the 311 implants, 124 (39.9%) had NT implants, and 187 (60.1%) had MC implants. Out of the 112 patients, 37 (44.6%) were females, and 10 (34.5%) were males included in the NT group. In contrast, 46 (55.4%) females and 19 (65.5%) males were in the MC group. The mean age among the two groups was 41.43 ± 15.900 and 46.68 ± 16.070, respectively. In contrast, the mean MBL among the groups were 0.544 ± 0.7129 and 0.061 ± 0.2648, respectively. The change in MBL was not positively correlated with gender (p-value = 0.154) or age (p-value = 0.115) in both groups. However, there was a significant difference (p-value = 0.001, X2 = 62.796, Df = 4) of MBL between the two implant systems themselves. The MBL was higher in people implanted with the NT system when compared to MC. Therefore, the MC implant system can be a better choice for marginal bone preservation, especially in restoring esthetically demanding areas in the mouth.

scholarly journals Rehabilitation of the Completely Edentulous Mandible by All-on-Four Treatment Concept: A Retrospective Cohort Study with Up to 10 Years Follow-Up

Medicina ◽  
2021 ◽  
Vol 58 (1) ◽  
pp. 10
Author(s):  
Tommaso Grandi ◽  
Luca Signorini
Keyword(s):  
Survival Rate ◽  
Bone Loss ◽  
Treatment Concept ◽  
Marginal Bone Loss ◽  
Mechanical Complications ◽  
Prosthesis Survival ◽  
Edentulous Mandible ◽  
Significant Difference

(1) Background and Objectives. Currently, there are no definitive long-term data about clinically significant difference in the failure of prosthesis and implant or marginal bone loss related to the rehabilitation of the completely edentulous mandible by all-on-four treatment concept. The main aim of present investigation was to report the long-term outcomes (10-years follow-up) of complete-arch mandibular rehabilitations based on the all-on-four concept. (2) Materials and Methods. Patients in need of extractions of teeth due to the occurrence of caries and/or severe periodontal disease and patients presented with edentulous mandibles were enrolled to the study. A total of 96 participants (mean follow-up period after intervention of 3185.2 days) were enrolled in the study. Participants were evaluated at the first visit, 10 days after intervention and every year after the intervention. Implant and prosthesis survival, bone loss and both local biological and mechanical complications were evaluated during the follow-up period. (3) Results. An implants’ survival rate of 97.9% was observed at the end of the follow-up period. Biological complications were reported in 19.8% of patients, whereas mechanical complications were reported in 27.1% of cases. The average marginal bone level at baseline was −0.03 mm. A significant marginal bone loss was observed after 10-years follow-up (2.5 mm). Binary logistic regression analysis showed significant association between smoke and both marginal bone loss and local biological complications. Lastly, a significant association was observed between bruxism and mechanical complications. (4) Conclusions. The high implant and prosthesis survival rate and the moderate incidence of biological and mechanical complications observed in present investigation can be associated to several factors such as high implant primary stability, prosthetic design, and control of the occlusal forces.

scholarly journals A Clinical and Radiographic Evaluation of Zirconia Dental Implants: 10-Year Follow-Up

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Andrea Enrico Borgonovo ◽  
Susanna Ferrario ◽  
Carlo Maiorana ◽  
Virna Vavassori ◽  
Rachele Censi ◽  
...  
Keyword(s):  
Bone Loss ◽  
Dental Implants ◽  
Clinical Success ◽  
Radiographic Evaluation ◽  
Success Rates ◽  
Marginal Bone Loss ◽  
Single Tooth ◽  
Zirconia Implants

Purpose. The aim is to evaluate the survival and success rates, as well as the marginal bone loss (MBL) and periodontal indexes, of zirconia implants with 10-year follow-up. Materials and Methods. 10 patients were selected and 26 one-piece zirconia implants were used for the rehabilitation of single tooth or partially edentulous ridge. After 10 years, a clinical-radiographic evaluation was performed in order to estimate peri-implant tissue health and marginal bone loss. Results. The survival and success rates were 100%. The average marginal bone loss from baseline to 120 months after surgery was 0.92 ± 0.97 mm. Conclusion. One-piece zirconia dental implants are characterised by high biocompatibility, low plaque adhesion, and absence of microgap that can be related to the clinical success of these implants.

scholarly journals Effect of Opposite Tooth Condition on Marginal Bone Loss around Submerged Dental Implants: A Retrospective Study with a 3-Year Follow-Up

2021 ◽  
Vol 18 (20) ◽  
pp. 10715
Author(s):  
Odontuya Dorj ◽  
Hsi-Kuei Lin ◽  
Eisner Salamanca ◽  
Yu-Hwa Pan ◽  
Yi-Fan Wu ◽  
...  
Keyword(s):  
Retrospective Study ◽  
Bone Loss ◽  
Dental Implants ◽  
Marginal Bone Loss ◽  
Bone Level ◽  
Natural Teeth ◽  
Marginal Bone Level

Background: The objective of this study was to evaluate the effects of opposite tooth conditions on change in marginal bone level (MBL) around submerged dental implants. Materials and methods: The study included healthy patients with one or two implants. Structures opposite implants were either natural teeth (NT) or fixed restorations (FRs). MBLs were measured on digital periapical radiographs at the mesial and distal aspects of each implant. Results: Sixty implants were inserted by the 3-year follow-up. Mean MBLs for NT were 0.21 ± 0.33 mm before prosthetic loading and 0.30 ± 0.41 mm 3 years later (p = 0.001). Mean MBLs with FRs were 0.36 ± 0.45 mm before loading and 0.53 ± 0.50 mm 3 years later (p < 0.001). Changes in mean MBL from the 6-month follow-up to the 1- and 3-year follow-ups were statistically significant (p < 0.01) for implants opposite NT. However, changes in mean MBL from the 6-month follow-up to the 1-year (p = 0.161) and 3-year follow-ups (p = 1.000) were not significant for implants opposite FRs. Between baseline and the 3-year follow-up, MBL change was relatively small and did not differ regarding NT and FRs. Conclusion: Bone loss was greater if submerged dental implants were opposed by FRs. MBLs around submerged implants continued to change after 3 years if NT opposed implants.

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