Recently, among the edentulous patients who undergo dental implants, the proportion of hypertensive patients remains high, which poses a greater challenge for clinicians to operate and to maintain the therapeutic effect. The present review comprehensively summarized clinical researches about the adverse effects on dental implants, outlined molecular mechanisms of the positive effects of various antihypertensive drugs on bone metabolism, and proposed that clinicians should select preventive strategies during preoperative and intraoperative procedures according to the blood pressure of patients with hypertension.
Alveolar Bone Loss ; Dental Implantation, Endosseous/methods* ; Dental Implants ; Dental Prosthesis, Implant-Supported ; Dental Restoration Failure ; Humans ; Hypertension/surgery* ; Jaw, Edentulous ; Maxilla/surgery* ; Risk Assessment

The use of dynamic navigation technology in edentulous jaw implant restoration can solve many problems associated with traditional edentulous jaw implant restoration. The benefits of dynamic navigation include fine positioning guidance, restoration-guided surgery, good aesthetic results, and the possibility of simultaneous conceptual design and real-time implant guidance, as well as the transition from "blind" to "direct" vision during the implantation. It can guide clinicians and adjust the plan in real time, improve the efficiency of communication between the clinician, technician, and patient throughout the process and so on. The workflow, current clinical application and challenges, accuracy analysis, and limitations of the dynamic navigation technology in the edentulous jaw are discussed in this paper, as well as an outlook on its future development, with the goal of contributing to the clinical development of dynamic navigation-guided implantology in the edentulous jaw.
Humans ; Dental Implantation, Endosseous/methods* ; Dental Implants ; Surgery, Computer-Assisted/methods* ; Esthetics, Dental ; Jaw, Edentulous/surgery* ; Technology

The tilted implantation technique is characterized by placing the implant at an angle of more than 15° and less than 45° from the horizontal plane. This technique can avoid damaging the maxillary sinus, inferior alveolar nerve, nasal base, and other anatomical structures when the height of the upper and lower jaw available bone is insufficient, to maximize the use of available bone and avoid a large range of bone increment. The tilted implantation technique can reduce the trauma of the surgery, increase the possibility of immediate restoration and shorten the treatment cycle, which has been widely used clinically. In this review, the scope of application, design elements, design scheme and complications of the tilted implantation technique for edentulous patients will be described.
Alveolar Bone Loss ; Dental Implantation, Endosseous ; Dental Implants ; Dental Prosthesis Design ; Dental Prosthesis, Implant-Supported ; Follow-Up Studies ; Humans ; Jaw, Edentulous/surgery* ; Mandible ; Maxilla/surgery* ; Maxillary Sinus/surgery* ; Mouth, Edentulous/surgery*

OBJECTIVES: This study aims to evaluate the short-term clinical outcomes and patient satisfaction of anterior and pterygoid implants in the rehabilitation of edentulous maxilla with posterior atrophy. METHODS: Given a minimum follow-up of 1 year, 25 patients with fixed maxillary rehabilitation over anterior and pterygoid implants were enrolled in this retrospective study. The implant survival rates, peri-implant soft tissue status (including probing depth, modified sulcus bleeding index, and plaque index), marginal bone loss, and patient satisfaction were measured. RESULTS: The survival rates for anterior and pterygoid implants at 1-year follow-up were 96.5% and 97.8%, respectively ( CONCLUSIONS For the edentulous maxilla with posterior atrophy, full-arch fixed prostheses supported by anterior and pterygoid implants has an acceptable short-term clinical outcome and excellent patient satisfaction. It may be considered as a predictable and feasible method for maxillary rehabilitation.
Atrophy/pathology* ; Dental Implantation, Endosseous ; Dental Implants ; Dental Prosthesis, Implant-Supported ; Follow-Up Studies ; Humans ; Jaw, Edentulous/surgery* ; Maxilla/surgery* ; Retrospective Studies ; Treatment Outcome

Aged ; Female ; Humans ; Immediate Dental Implant Loading ; methods ; Jaw, Edentulous ; diagnostic imaging ; rehabilitation ; surgery ; Male ; Mandible ; diagnostic imaging ; surgery ; Maxilla ; diagnostic imaging ; surgery ; Middle Aged ; Radiography, Panoramic ; Surgery, Computer-Assisted ; methods

Dental Implantation, Endosseous ; methods ; Dental Implants ; Dental Restoration Failure ; Denture, Complete, Immediate ; Humans ; Jaw, Edentulous ; surgery

OBJECTIVETo evaluate the long-term clinical outcome of delayed implant placements after maxillary sinus floor augmentation with autologous bone or Bio-Oss grafting.

METHODSEighteen patients underwent maxillary sinus floor augmentation and delayed implant placements from January, 2002 to December, 2008. Bone grafting and sinus floor augmentation were performed in 21 sides of maxilla and 46 implants were placed 6 - 8 months later. Residual bone height was less than 4 mm. The cases were divided to 2 groups and different materials (autologous bone + Bio-Oss and Bio-Oss alone) were grafted relatively. The bone resorption was assessed by panoramic X-ray and the stability of the implant was reviewed postoperatively.

RESULTSThe average follow-up time was 54 months. Only one implant was lost and the implant survival rate was 98%. X-ray showed that the bone resorption was observed in both groups. The absorption ratio of autologous bone + Bio-Oss group was 18.65% and that of the Bio-oss group was 1.93%. The difference was significantly different.

CONCLUSIONSThe result of maxillary sinus floor augmentation with bone grafting was predictable. More bone absorption occurred in the Bio-Oss than in autologous bone + Bio-Oss.

Adult ; Bone Substitutes ; therapeutic use ; Bone Transplantation ; methods ; Collagen ; therapeutic use ; Dental Implantation, Endosseous ; methods ; Female ; Follow-Up Studies ; Humans ; Jaw, Edentulous, Partially ; diagnostic imaging ; surgery ; Male ; Maxilla ; diagnostic imaging ; Middle Aged ; Minerals ; therapeutic use ; Radiography, Panoramic ; Sinus Floor Augmentation ; methods ; Young Adult

OBJECTIVETo guide doctors in precisely positioning surgical operation, a new production method of minimally invasive implant guide template was presented.

METHODSThe mandible of patient was scanned by CT scanner, and three-dimensional jaw bone model was constructed based on CT images data The professional dental implant software Simplant was used to simulate the plant based on the three-dimensional CT model to determine the location and depth of implants. In the same time, the dental plaster models were scanned by stereo vision system to build the oral mucosa model. Next, curvature registration technology was used to fuse the oral mucosa model and the CT model, then the designed position of implant in the oral mucosa could be determined. The minimally invasive implant guide template was designed in 3-Matic software according to the design position of implant and the oral mucosa model. Finally, the template was produced by rapid prototyping.

RESULTSThe three-dimensional registration technology was useful to fuse the CT data and the dental plaster data, and the template was accurate that could provide the doctors a guidance in the actual planting without cut-off mucosa.

CONCLUSIONThe guide template which fabricated by comprehensive utilization of three-dimensional registration, Simplant simulation and rapid prototyping positioning are accurate and can achieve the minimally invasive and accuracy implant surgery, this technique is worthy of clinical use.

Computer-Aided Design ; Dental Implantation, Endosseous ; Dental Implants ; Dental Models ; Humans ; Jaw, Edentulous ; Mandible ; Patient Care Planning ; Surgery, Computer-Assisted

AIMThis paper deals with the treatment of an atrophied toothless mandible with a fixing bridge carried by two nonstandard implant systems.

METHODOLOGYFour bicortical screws were implanted into the frontal part of the mandible and one implant on each side was placed into the distal area of the mandible as a support for a fixing bridge.

RESULTSDuring the years 2002 - 2007 the authors placed a total of 256 bicortical screw and 84 blade implants. During this period only four bicortical screws and one blade implant failed. The primary and secondary surgical success rate was therefore above 98%, while the prosthetic success rate was 100%. (Bridges which had to be re-fabricated due to implant failure were not taken into account.)

CONCLUSIONThis approach is recommended as a highly successful and affordable option for a wide range of patients.

Blade Implantation ; Dental Implantation, Endosseous ; instrumentation ; methods ; Dental Implants ; Dental Prosthesis, Implant-Supported ; Female ; Humans ; Jaw, Edentulous ; rehabilitation ; Male ; Mandible ; surgery ; Middle Aged

OBJECTIVEThe computer aided design and computer aided manufacture (CAD/CAM) template was fabricated basing on CT data of completely edentulous jaws, and the accuracy of template was evaluated by assessment of the deviation between the actual and planning position of the implant after the registration of pre- and post-operative CT images.

METHODSThe CAD/CAM templates for 4 completely edentulous jaws were designed and fabricated basing on the pre-operative CT data and the stone models of the jaws sample. And 14 implants were placed in the posterior region of the jaws aided by the CAD/CAM template. The pre- and post-operative CT was registered by the point to point method, and the deviation between actual and virtual implants was measured to assess the accuracy of the template.

RESULTSWith the aid of CAD/CAM template, the deviations of the position at the tail of the implant, at the tip of the implant and the projected deviation of angle were (0.19 +/- 0.07) mm, (0.47 +/- 0.12) mm, and 1.790 +/- 0.68 degrees respectively, and the deviations of the position at the bucco-palatal, disto-mesial, vertical direction were (0.22 +/- 0.08) mm, (0.25 +/- 0.06) mm, (0.30 +/- 0.11) mm at the tip respectively.

CONCLUSIONWithin the limits of this study, the results verify the accuracy of CAD/CAM template and support its use for safety implant placement.

Computer-Aided Design ; Dental Implantation, Endosseous ; Dental Implants ; Humans ; Jaw, Edentulous ; Patient Care Planning ; Surgery, Computer-Assisted