scholarly journals A 24-year Retrospective Study of Bone Growth After Implant Placement

2005 ◽  
Vol 31 (2) ◽  
pp. 98-103 ◽  
Author(s):  
Ralph A. Roberts
Keyword(s):  
Bone Growth ◽  
Mental Foramen ◽  
The Body ◽  
Anatomical Structures ◽  
P Values ◽  
Implant Placement ◽  
Bone Changes ◽  
Inferior Alveolar Canal ◽  
Bone Height

Abstract This study quantifies the changes in bone height noted in the body of the edentulous mandibles when the load of the complete denture is born by an RA Ramus Frame Implant (Pacific Implant, Rio Dell, Calif). Eighty-three patients with implants were followed for 3 to 24 years. Pre- and postoperative panoramic films were taken and again at each succeeding 5-year follow-up. The results of the bone changes were gathered retrospectively and calculated. The data revealed a significant increase in bone height from 4.413 to 13 mm and statistically significant P values of .0003 were determined. The growth of bone appears to be influenced by the design of the posterior feet, dominant chewing side, and a range of extreme atrophy from 5.9 mm to 15 mm. Also, the previously lost anatomical structures appear to repair, such as the luman of the mental foramen and the superior wall over the inferior alveolar canal. All mandibles were loaded postoperatively with an appliance having cutting bars and porcelain teeth or just porcelain teeth in both appliances.

Implant Failure Associated With Actinomycosis in a Medically Compromised Patient

2013 ◽  
Vol 39 (2) ◽  
pp. 206-209 ◽  
Author(s):  
Chun-Xiao Sun ◽  
Jeffrey M. Henkin ◽  
Craig Ririe ◽  
Elham Javadi
Keyword(s):  
Severe Pain ◽  
Mental Foramen ◽  
Implant Failure ◽  
Common Disease ◽  
Histological Observation ◽  
Radiographic Findings ◽  
Implant Placement ◽  
Short Course ◽  
Sulfur Granules

Oral actinomycosis is not a common disease, but it can cause massive destruction. This article reports a case of implant failure associated with actinomycosis. A 55-year-old Caucasian male patient had tooth #20 extracted years ago and an implant placed 3 years ago. The #20 implant area developed an abscess about 1½ years after implant placement. Radiographic findings revealed a large radiolucency on the mesial aspect of the #20 implant. The implant was surgically removed and the lesion thoroughly debrided. The patient experienced severe pain when the apical soft tissue was curreted following implant removal. A periapical radiograph revealed that the lesion approached the mental foramen. A short course of antibiotics was prescribed. Histological observation found sulfur granules, which were found to be actinomycotic colonies. Peri-implant actinomycosis was diagnosed. No recurrence had occurred at the 1-year follow-up.

Factors Associated With Crestal Bone Loss Following Dental Implant Placement in a Longitudinal Follow-up Study

2015 ◽  
Vol 41 (5) ◽  
pp. 579-585 ◽  
Author(s):  
Sang Y. Kim ◽  
Thomas B. Dodson ◽  
Duy T. Do ◽  
Gary Wadhwa ◽  
Sung-Kiang Chuang
Keyword(s):  
Bone Loss ◽  
Dental Implant ◽  
Multivariate Model ◽  
Predictor Variables ◽  
Outcome Variable ◽  
Factors Associated ◽  
Implant Placement ◽  
Crestal Bone Loss ◽  
Bone Height

The purpose of this study is to estimate the magnitude of crestal bone loss and to identify factors associated with changes in crestal bone height following placement of dental implants. This was a retrospective cohort study, consisting of a sample derived from the population of patients who had at least 1 dental implant placed in a community practice over a 10-year period. A total of 11 predictor variables were grouped into demographic, related health status, anatomic, implant-specific, and operative categories. The primary outcome variable was a change in crestal bone height (mm) over the course of follow-up. The secondary outcome variable was crestal bone loss at 1 year grouped into 2 categories (bone loss >1.5 mm and ≤1.5 mm). Univariate and multivariate regression mixed-effects models were developed to identify variables associated with crestal bone level changes over time. P values ≤.05 were considered statistically significant. The study sample was composed of 85 subjects who received 148 implants. The mean change of the crestal bone was −2.1 ± 1.5 mm (range = −12.5 to 0.5 mm; median = −1.77 mm). In the multivariate model, none of the variables studied were statistically associated with mean crestal bone loss. Among 84 (66.1%) implants with bone loss >1.5 mm within 1 year, no variables were associated with bone loss in the multivariate model. Of the 11 predictor variables evaluated in this study, none were statistically significant with regard to an increased risk for crestal bone loss or for excessive bone loss within the first year after implant placement.

scholarly journals Osteotome-Induced Blood Clot and Subsequent Bone Formation with the Use of Collagen Sponge for Integration of Single Dental Implants into the Atrophied Posterior Maxilla: A Retrospective Follow-Up of 36 Implants after 5 to 13 years

2022 ◽  
Vol 2022 ◽  
pp. 1-8
Author(s):  
Stefano Volpe ◽  
Michele Di Girolamo ◽  
Paolo Pagliani ◽  
Sandro Zicari ◽  
Lars Sennerby
Keyword(s):  
Bone Formation ◽  
Maxillary Sinus ◽  
Bone Grafting ◽  
Collagen Sponge ◽  
Implant Placement ◽  
Posterior Maxilla ◽  
Second Surgery ◽  
Sinus Floor ◽  
Bone Height

Background. Atrophy of the posterior maxilla as a consequence of tooth loss and sinus pneumatization is a frequent condition encountered in the clinical practice. Prosthetic rehabilitation with implants in these patients often requires some kind of bone regeneration procedure to increase the bone volume. Aim. The aim of the present retrospective study is to analyze the survival and success rates of a series of implants placed in the atrophic posterior maxilla with a transcrestal osteotome procedure, without placing a bone grafting material. Materials and Methods. From 2006 to 2014, 36 dental implants (Neoss Ltd., Harrogate, UK) were inserted in 36 patients with at least 4 mm of bone below the maxillary sinus using transcrestal osteotome sinus floor elevation and placement of collagen sponge below the sinus membrane. ISQ measurements were made after implant placement and at abutment surgery after 4 to 6 months. The vertical bone height (VBH) was evaluated in intraoral radiographs taken prior to surgery and in radiographs from annual check-up appointments 5 to 13 years after implant placement. In addition, marginal bone loss (MBL) was evaluated. Results. One implant was lost after four years of prosthetic loading. The remaining 35 implants showed no complications and were loaded with single crowns after 4–6 months of healing. All 35 implants showed clinical success after 8.5 ± 2.8 years of prosthetic loading (from 5 to 13 years). The vertical bone height was 5.9 ± 1.4 mm at surgery, 9.7 ± 1.1 mm at second surgery after 4–6 months, and 8.3 ± 1.8 at the follow-up at 8.5 ± 2.8 years (from 5 to 13 years). The implant stability registered was 73.2 ± 6.2 ISQ at the surgery and 75.8 ± 3.9 at the second surgery after 4–6 months. Conclusions. The present long-term follow-up study showed that the crestal approach for sinus floor bone augmentation without additional bone grafting results in predicable bone formation and high implant survival. The osteotome technique is a valid alternative to the more invasive lateral window technique in single cases with a minimum of 4 mm of VBH below the maxillary sinus.

scholarly journals Synthetic putty and simultaneous short implant placement in crestal sinus lifting procedures: 13–36 months follow-up - a case series

2020 ◽  
Author(s):  
Maarten Boogaard
Keyword(s):  
Bone Graft ◽  
Case Series ◽  
Implant Placement ◽  
Sinus Lifting ◽  
Sinus Floor ◽  
Window Approach ◽  
Bone Gain ◽  
Bone Height ◽  
Short Implant

Aim of this investigation is to show in sites with less than 4mm of bone height of the sinus floor, synthetic putty bone graft and simultaneous short implant placement in crestal sinus lifting procedures result in sufficient bone gain, and is a valuable option to the more invasive lateral-window approach.

scholarly journals Effect of Different Timings of Implant Insertion on the Bone Remodeling Volume around Patients’ Maxillary Single Implants: A 2–3 Years Follow-Up

2020 ◽  
Vol 17 (18) ◽  
pp. 6790
Author(s):  
Giovanni Battista Menchini-Fabris ◽  
Paolo Toti ◽  
Giovanni Crespi ◽  
Ugo Covani ◽  
Luca Furlotti ◽  
...  
Keyword(s):  
Bone Loss ◽  
Bone Remodeling ◽  
Dental Implant ◽  
Volume Loss ◽  
P Values ◽  
Implant Placement ◽  
Single Crown ◽  
Significant Difference ◽  
Delayed Group

Background: To investigate the middle-term effect on bone remodeling of different timings for different implant placement (immediate versus delayed). Methods: Patients with an anterior maxillary failing tooth were treated by single-crown supported by dental implant. Subjects were retrospectively analyzed for 3 years and assigned to one of two predictor groups: nine immediate versus 10 delayed implant placement (1–2 months after tooth extraction). The crestal bone loss around dental implants was measured with the cone beam computerized tomography by fusing pre-operative and post-operative data. Results: The percentage of volume loss registered at 1-year follow-up (%ΔV) was of 7.5% for the immediate group, which was significantly lower (p-values ≤ 0.0002) than the loss of 24.2% for the delayed group. At 3 years, there was a significant difference (p-values = 0.0291) between the two groups, respectively, with a volume loss of 14.6% and 27.1%. When different times were compared, the percentage of the volume loss for the immediate group was different (p-value = 0.0366) between the first and third year (7.5% and 14.6%, respectively). For the delayed group, no significant difference was registered between the 1- and 3-year follow-up. Conclusions: The bone loss around dental implant-supported single-crown with different timing of insertion appeared higher for the delayed group than the immediate group.

Bone behavior in the posterior region of edentulous mandibles rehabilitated with implant-retained fixed prostheses:  32 months longitudinal prospective study

2020 ◽  
Author(s):  
Flávia Noemy Gasparini Kiatake Fontão ◽  
Dercelino Bittencourt Júnior ◽  
Ana Cláudia Moreira Melo ◽  
Paola Rebellato Acântara ◽  
Anna Paula da Rosa Possebon ◽  
...  
Keyword(s):  
Bone Remodeling ◽  
Bone Growth ◽  
Mental Foramen ◽  
Posterior Region ◽  
Growth Difference ◽  
Significant Difference ◽  
Bone Preservation ◽  
Fixed Prosthesis ◽  
Post Hoc ◽  
Bone Height

Research has shown that the presence of implants can revert bone resorption and thus contribute to a greater preservation of the residual bone ridge, especially in edentulous mandibles. Bone remodeling has yet to be extensively studied in the context of prosthetic options for edentulous arches. This study aims to evaluate the long-term behavior of bone tissue in the posterior region of edentulous mandibles rehabilitated with implant-retained fixed prostheses using cone beam computed tomography (CBCT). Selected individuals were rehabilitated with 5 external hexagon platform implants and an implant-retained fixed prosthesis. CBCT scans were performed immediately after surgery and after 8, 22, and 32 months (T0, T8, T22, and T32, respectively). Implants were installed between the mental foramen. Subsequently, bone crest height and density were measured in the posterior region of the mandible on the images in 3 distinct areas at 5, 10, and 15 mm from the center of the distal implant axis. Analysis of variance and the Bonferroni post-hoc test were used for multiple analyses. The results indicate a statistically significant difference in bone height between T0 and all subsequent times; the bone height at T32 was 8.85% higher than at T0 (p = 0.05). There was bone height difference between all analyzed regions. The bone growth difference between the 5 mm and 15 mm positions was 28.42% after 32 months (p = 0.00). A significant increase of 5.76% in bone density was observed between T0 and T22 (p = 0.03). Within the limitations of this study (sample size, follow-up duration), it was demonstrated that the  use  of  implant-retained  fixed  prostheses  in  the  mandible  resulted  in  qualitative  and quantitative bone growth (bone preservation) in the posterior region of the mandible. Further research is needed to identify the validity of our findings for other populations and determine the duration of the bone remodeling process in rehabilitated edentulous mandibles.

scholarly journals Sinus Floor Elevation with Modified Crestal Approach and Single Loaded Short Implants: A Case Report with 4 Years of Follow-Up

2017 ◽  
Vol 2017 ◽  
pp. 1-7
Author(s):  
Michele Perelli ◽  
Roberto Abundo ◽  
Giuseppe Corrente ◽  
Carlo Saccone ◽  
Paolo G. Arduino
Keyword(s):  
Surgical Techniques ◽  
Sinus Floor Elevation ◽  
Implant Placement ◽  
Basal Bone ◽  
Short Implants ◽  
Sinus Floor ◽  
Bone Gain ◽  
Bone Height ◽  
Functional Loading

Tooth extraction is usually followed by bone reduction. In the maxillary posterior region, this remodelling combined with sinus pneumatisation and periodontal defects may lead to a reduced basal bone height available for implant placement. Sinus floor elevation can be performed with different surgical techniques. Crestal approach has demonstrated to be effective, less invasive, and associated with a reduced morbidity. This article reports a modified sinus floor elevation by means of rotary, noncutting instruments, addition of xenograft, and 2 short-threaded implant placements. The aim of the study was to evaluate the implant’s success and intrasinus radiographical bone gain after 4 years of functional loading. The premolar implant site presented a starting basal bone height of 6 mm, while the molar site was of 2 mm. In the first surgical step, sinus floor elevation was performed mesially and the implant was inserted, and distally only sinus floor elevation was performed. After 6 months, the mesial implant was uncovered and the second implant was inserted; 4 months later, the second fixture was uncovered, and both fixtures were loaded with single provisional screw-retained crowns and later with single screw-retained porcelain fused to metal crowns. Implants integrated successfully, and crestal bone remodelling did not exceed the smooth collar. Bone gain was 3 mm for the mesial implant and more than 5 mm for the distal one.

scholarly journals Decoronation: An Alternative Treatment for Replacement Root Resorption

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Marianne Sala ◽  
Asunción Mendoza-Mendoza ◽  
Rosa-María Yañez-Vico
Keyword(s):  
Root Development ◽  
Bone Growth ◽  
Root Resorption ◽  
Short Term ◽  
Maxillary Central Incisor ◽  
Tooth Avulsion ◽  
Final Treatment ◽  
The Right ◽  
Bone Height

Introduction. Ankylosis and disrupted or altered root development are frequent complications associated with intrusive luxation and tooth avulsion lesions. Various forms of treatment have been described according to the severity of the trauma and root development. The literature shows that decoronation is an ideal treatment in cases where replacement resorption occurs. Methods. Two clinical cases are presented: involving intrusive luxation [15-year-old female patient with an affected maxillary left lateral incisor (2.2)] and a replanted avulsed tooth [8-year-old male patient with avulsion of the right maxillary central incisor (1.1)]; both cases presented advanced root resorption so that decoronation with a prosthetic tooth replacement was decided as the final treatment option. Results. In the short-term follow-up, patients were asymptomatic and had no functional problems. Radiographs showed that crestal bone height had been preserved. Conclusions. Preserving the decoronated root in the alveolar process not only helps to maintain bone volume but also enables vertical bone growth and facilitates the future insertion of an implant.

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