scholarly journals Errors in Implant Positioning Due to Lack of Planning: A Clinical Case Report of New Prosthetic Materials and Solutions

Materials ◽  
2020 ◽  
Vol 13 (8) ◽  
pp. 1883 ◽  
Author(s):  
Marco Tallarico ◽  
Roberto Scrascia ◽  
Marco Annucci ◽  
Silvio Mario Meloni ◽  
Aurea Immacolata Lumbau ◽  
...  
Keyword(s):  
Case Report ◽  
Treatment Plan ◽  
Survival Rates ◽  
Primary Treatment ◽  
High Survival ◽  
Adequate Treatment ◽  
Implant Position ◽  
Implant Positioning ◽  
Implant Placement

The achievement of the optimal implant position is a critical consideration in implant surgery, as it can facilitate the ideal prosthesis design and allow adequate oral hygiene maintenance. The switch from bone-driven to prosthetic-driven implant placement, through a comprehensive diagnosis and adequate treatment plan, is a prerequisite for long-term successful implant-based therapy. The aim of the present case report is to describe a step-by-step prosthetic retreatment of a patient with primary treatment failure due to incorrect dental implant placement. Although dental implants achieve high survival rates, the success of implant prosthetic therapy significantly relies on an appropriate implant position. Malpositioned implants can cause damage to vital structures, like nerves or vessels. Moreover, improper implant positioning can result in esthetic, biological, and technical complications and can, in extreme situations, render the desired prosthetic rehabilitation impossible to achieve.

scholarly journals A guide to implant dentistry part 1: treatment planning

Dental Update ◽  
2019 ◽  
Vol 46 (5) ◽  
pp. 412-425
Author(s):  
Despoina Chatzistavrianou ◽  
Paul HR Wilson ◽  
Philip Taylor
Keyword(s):  
Treatment Planning ◽  
Survival Rates ◽  
Evidence Based ◽  
High Survival ◽  
Implant Placement ◽  
Careful Treatment ◽  
Operative Planning ◽  
Implant Dentistry ◽  
Term Maintenance

Implant rehabilitation is considered a predictable treatment modality to replace single and multiple missing units, with high survival rates. Technical and biological complications are commonly encountered and careful treatment planning, restorative-driven implant placement and long-term maintenance are prerequisites of a successful implant rehabilitation. The aim of this two-part series is to provide an evidence-based overview regarding the sequence of treatment planning and the treatment stages of a successful implant rehabilitation. The first part of the series will focus on new patient assessment and pre-operative planning. The second part of the series will discuss the surgical and prosthodontic considerations and maintenance of implant-supported restorations. CPD/Clinical Relevance: To provide the dental practitioner with an evidence-based overview regarding treatment planning, surgical and prosthodontic considerations and maintenance of implant-supported restorations.

scholarly journals Clinical long-term and patient-reported outcomes of dental implants in oral cancer patients

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Eik Schiegnitz ◽  
Lena Katharina Müller ◽  
Keyvan Sagheb ◽  
Lisa Theis ◽  
Vahide Cagiran ◽  
...  
Keyword(s):  
Radiation Therapy ◽  
Oral Cancer ◽  
Cancer Patients ◽  
Dental Implants ◽  
Survival Rates ◽  
Implant Survival ◽  
Implant Placement ◽  
Patient Reported ◽  
Oral Cancer Patients

Abstract Background and purpose The aim of this clinical study was to investigate the clinical long-term and patient-reported outcome of dental implants in patients with oral cancer. In addition, analysis of the influence of radiation therapy, timing of implant insertion, and augmentation procedures on implant survival was performed. Material and methods This retrospective study investigated the clinical outcome of 711 dental implants in 164 oral cancer patients, inserted by experienced surgeons of the Department of Oral and Maxillofacial Surgery, University Medical Center Mainz, Germany. Oral health-related quality of life (OHRQoL) was evaluated. Results Cumulative 5-year and 10-year implant survival rates for all included implants were 87.3% and 80.0%. Implants placed straight after ablative surgery (primary implant placement) and implants placed after completing the oncologic treatment (secondary implant placement) showed a comparable implant survival (92.5% vs. 89.5%; p = 0.635). Irradiation therapy had no significant influence on implant survival of secondary placed implants (p = 0.929). However, regarding implant site (native bone vs. augmented bone) and radiation therapy (non-irradiated bone vs. irradiated bone), implants inserted in irradiated bone that received augmentation procedures showed a statistically significant lower implant survival (p < 0.001). Patients reported a distinct improvement in OHRQoL. Conclusions Promising long-term survival rates of dental implants in patients after treatment of oral cancer were seen. In addition, patients benefit in form of an improved OHRQoL. However, bone augmentation procedures in irradiated bone may result in an impaired implants’ prognosis.

scholarly journals Transalveolar nasal floor elevation and implant placement: Long term follow-up case report and description of the technique

2021 ◽  
pp. 100222
Author(s):  
Eduardo Anitua ◽  
Beatriz Anitua ◽  
Mohammad Hamdan Alkhraisat ◽  
Laura Piñas ◽  
Asier Eguia
Keyword(s):  
Case Report ◽  
Implant Placement ◽  
Nasal Floor ◽  
Long Term Follow Up

scholarly journals Lymphadenectomy in the Treatment of Colon Cancer: A Survival Nalysis

2019 ◽  
Vol 4 (12) ◽  
Author(s):  
Romualdo Silva Corrêa ◽  
Luciana Ayres de Oliveira Lima ◽  
Isa Maryana Araújo Bezerra de Macedo ◽  
Amália Cinhtia Meneses Rêgo ◽  
Irami Araújo-Filho
Keyword(s):  
Colon Cancer ◽  
Lymph Nodes ◽  
Medical Records ◽  
Survival Rates ◽  
Primary Treatment ◽  
Term Survival ◽  
Kaplan Meier ◽  
The Impact ◽  
Radiotherapy Treatment

Colon cancer is a curable disease when restricted to the bowel and colectomy, the primary treatment. However, the presence and number of resected lymph nodes influence the therapeutic approach and prognosis of the patient. To evaluate the impact of the number of resected lymph nodes on the overall survival of patients treated for colon cancer at the League of Cancer Hospital - Natal - State of Rio Grande do Norte (RN) - Northeast Brazil. A retrospective observational study of 80 patients with colon cancer from Dr. Luiz Antônio Hospital (Natal-RN / Brazil), considering the period 2007-2014. Data were collected through medical records review. Survival rates were calculated and compared using the non-parametric Kaplan-Meier and Wilcoxon tests, respectively. All patients underwent radical surgical treatment associated or not with chemotherapy and/or radiotherapy treatment. The median survival time for the group of patients who had 12 or more resected lymph nodes was 9.4 years, in contrast to the 3.3 years of those who had less than 12 lymph nodes. Conclusion: It was concluded that a total of 12 or more resected lymph nodes confirmed by histopathology is associated with increased long-term survival in patients with colon cancer undergoing radical colectomy with or without chemotherapy and radiotherapy.

scholarly journals An Early Periprosthetic Fracture of a Cementless Oxford Unicompartmental Knee Arthroplasty: Risk Factors and Mitigation Strategies

2021 ◽  
Vol 11 (4) ◽  
Author(s):  
Li Zong Xian ◽  
Andrew Tan Hwee Chye
Keyword(s):  
Case Report ◽  
Knee Arthroplasty ◽  
Periprosthetic Fracture ◽  
Perioperative Complications ◽  
Survival Rates ◽  
Mitigation Strategies ◽  
Term Survival ◽  
Revision Total Knee Replacement ◽  
Total Knee

Introduction: The cementless Oxford partial knee arthroplasty is associated with low perioperative complications and good long-term survival rates. However, perioperative fractures remain a serious morbidity for patients. Case Report: This case report describes an early post-operative tibial periprosthetic fracture through the keel slot, which we believe may be contributed by the deep implant keel design and the presence of a narrow metaphysis in the Asian knee. The patient subsequently underwent a revision total knee replacement and fixation of the periprosthetic fracture. Conclusion: This paper discusses the ways to identify patients at high risk of developing periprosthetic fractures and to minimize such occurrences, including adopting a modified tibial preparation, doing precise saw cuts, and considering a cemented tibial implant. Keywords: Cementless, Oxford, unicompartmental, periprosthetic, keel.

Dual-Mobility Cups in Primary Total Hip Arthroplasty

2021 ◽  
Author(s):  
Petri Bellova ◽  
Jens Goronzy ◽  
Roman Riedel ◽  
Tim Grothe ◽  
Albrecht Hartmann ◽  
...  
Keyword(s):  
Hip Arthroplasty ◽  
Neuromuscular Disorders ◽  
Survival Rates ◽  
High Survival ◽  
Dual Mobility ◽  
Advantages And Disadvantages ◽  
Large Head ◽  
Dual Mobility Cups ◽  
Primary Hip Arthroplasty

AbstractDual-mobility cups (DMCs) were introduced in France more than 40 years ago and are increasingly used not only in hip revision but also primary hip arthroplasty. Due to a simulated large-head articulation and increased jumping distance, DMCs can contribute to a high range of motion in the hip joint and reduce the risk of instability. Numerous studies have reported low dislocation rates and high survival rates in the mid-term follow-up. Nevertheless, long-term data, especially on primary hip replacement, remain limited, and the effect of recent designs and material innovations is still unclear. Therefore, primary DMCs are mainly proposed in patients at high risk for dislocation (i.e. pelvitrochanteric insufficiency, compromised spinopelvic mobility, neuromuscular disorders, obesity and femoral neck fractures). Based on a review of recently published studies referring to these indications, the current study discusses the advantages and disadvantages of DMCs.

scholarly journals Mandibular Full-Arch Rehabilitation over 3 Straight Immediately Loaded Implants: 8 Years of Follow-Up

2019 ◽  
Vol 2019 ◽  
pp. 1-5
Author(s):  
Márcio de Carvalho Formiga ◽  
Magda Nagasawa ◽  
Jamil Awad Shibli
Keyword(s):  
Case Report ◽  
Dental Implants ◽  
Treatment Option ◽  
Successful Treatment ◽  
Treatment Plan ◽  
Adequate Treatment ◽  
The Past ◽  
Technical Complications ◽  
Edentulous Patients

Mandibular full-arch restoration is a good and successful treatment option for totally edentulous patients. In the past years, several studies have described the placement of 4 to 6 implants to restore this type of case; however, an option using 3 dental implants placed in strategic and specific positions could also be an alternative. Therefore, this case report describes a full-arch rehabilitation on 3 straight, immediately loaded implants after 8 years of follow-up. The restoration presented no biological or technical complications during this follow-up period, showing that an adequate treatment plan was able to allow good results using this treatment option.

scholarly journals Horizontal Ridge Augmentation Using a Xenograft Bone Substitute for Implant-Supported Fixed Rehabilitation: A Case Report with Four Years of Follow-Up

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Bruno Freitas Mello ◽  
Márcio de Carvalho Formiga ◽  
Luiz Fernando de Souza da Silva ◽  
Gustavo dos Santos Coura ◽  
Jamil Awad Shibli
Keyword(s):  
Case Report ◽  
Bone Tissue ◽  
Dental Implant ◽  
Bone Biopsy ◽  
Histological Evaluation ◽  
Autogenous Bone ◽  
High Survival ◽  
Ridge Augmentation ◽  
Implant Placement ◽  
Atrophic Maxilla

The guided bone regeneration (GBR) technique has been used to achieve optimal bone volume augmentation and allow dental implant placement in atrophic maxilla and mandible, with predictable results and high survival rates. The use of bone substitutes has reduced the necessity of autogenous bone grafts, reducing the morbidity at the donor areas and thus improving the patients’ satisfaction and comfort. This clinical case report shows a clinical and histological evaluation of the bone tissue behavior, in a case that required the horizontal augmentation of the alveolar ridge, with the use of xenograft biomaterial and further dental implant placement. After six months of healing time, six implants were placed, and a bone biopsy was done. The histological analysis depicted some fragments of the xenograft bone graft, integrated with the new-formed bone tissue.

scholarly journals Implant Therapy in the Esthetic Zone-Surgical Considerations

2016 ◽  
Vol 20 (2) ◽  
pp. 83-88 ◽  
Author(s):  
Aleksa Marković ◽  
T. Mišić
Keyword(s):  
Treatment Time ◽  
Implant Positioning ◽  
Implant Placement ◽  
Individual Assessment ◽  
Complex Procedure ◽  
Immediate Implant ◽  
Implant Therapy ◽  
And Function ◽  
Selection Of

Summary Implant placement in the esthetic zone is a complex procedure and requires a restoration-driven approach. Proper selection of patients and implant together with individual assessment of the risk of esthetic complications are very important. Correct 3D-implant positioning and sufficient bone volume should provide long-term esthetic and function. Esthetic region is a zone in which expectations and possibilities collide. Clinician should bring the important decision on the appropriate time of implant placement. Immediate implant placement is particularly challenging in the esthetic zone. Patient desire for reduced treatment time should be weighed against the possible risk factors. Protocol of immediate implant placement in conditions of unfavourable gingival biotypes, the lack of bone or soft tissue in patients with a high smile line lead to esthetic failure which is very important in the esthetic region.

scholarly journals Prospective evaluation of multitarget treatment of pediatric patients with helical intensity-modulated radiotherapy

2020 ◽  
Vol 196 (12) ◽  
pp. 1103-1115
Author(s):  
Maria-Elena A. Salfelder ◽  
Kerstin A. Kessel ◽  
Uwe Thiel ◽  
Stefan Burdach ◽  
Severin Kampfer ◽  
...  
Keyword(s):  
Survival Rate ◽  
Side Effects ◽  
Survival Rates ◽  
Young Patients ◽  
Intensity Modulated Radiotherapy ◽  
High Survival ◽  
Single Target ◽  
Number Of Patients ◽  
Grade 3

Abstract Background and purpose Radiotherapy (RT) is persistently gaining significance in the treatment of pediatric tumors. However, individual features of a growing body and multifocal stages complicate this approach. Tomotherapy offers advantages in the treatment of anatomically complex tumors with low risks of side effects. Here we report on toxicity incidence and outcome of tomotherapy with a focus on multitarget RT (mtRT). Materials and methods From 2008 to 2017, 38 children diagnosed with sarcoma were treated with tomotherapy. The median age was 15 years (6–19 years). Toxicity was graded according to the Common Terminology Criteria for Adverse Events v.4.03 and classified into symptoms during RT, acutely (0–6 months) and late (>6 months) after RT, and long-term sideeffects (>24 months). Results The main histologies were Ewing sarcoma (n = 23 [61%]) and alveolar rhabdomyosarcoma (n = 5 [13%]). RT was performed with a median total dose of 54 Gy (40.5–66.0 Gy) and a single dose of 2 Gy (1.80–2.27 Gy). Twenty patients (53%) received mtRT. Median follow-up was 29.7 months (95% confidence interval 15.3–48.2 months) with a 5-year survival of 55.2% (±9.5%). The 5‑year survival rate of patients with mtRT (n = 20) was 37.1 ± 13.2%, while patients who received single-target RT (n = 18) had a 5-year survival rate of 75 ± 10.8%. Severe toxicities (grade 3 and 4) emerged in 14 patients (70%) with mtRT and 7 patients (39%) with single-target RT. Two non-hematological grade 4 toxicities occurred during RT: one mucositis and one radiodermatitis. After mtRT 5 patients had grade 3 toxicities acute and after single-target RT 4 patients. One patient had acute non-hematological grade 4 toxicities (gastritis, pericarditis, and pericardial effusion) after mtRT. Severe late effects of RT occurred in 2 patients after mtRT and in none of the single-target RT patients. No severe long-term side effects appeared. Conclusion Our results showed acceptable levels of acute and late toxicities, considering the highly advanced diseases and multimodal treatment. Hence, tomotherapy is a feasible treatment method for young patients with anatomically complex tumors or multiple targets. Especially mtRT is a promising and innovative treatment approach for pediatric sarcomas, delivering unexpectedly high survival rates for patients with multifocal Ewing sarcomas in this study, whereby the limited number of patients should invariably be considered in the interpretation.

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