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

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

OBJECTIVETo investigate the clinical feasibility and technical characteristics of immediate loading and to access the short-term clinical results of treatment.

METHODSThis study included 3 completely edentulous patients and 24 patients who were partially edentulous from March 1999 to December 2003. 21 implants were immediately loaded and provided support for mandibular overdenture for 3 fully edentulous patients. 30 implants were placed in 21 partially edentulous patients and implants were immediate loaded in edentulous mandibular providing support for fixed provisional prosthesis within 6 months. Then, metal-ceramic crowns were completed. All patients were followed up by 1, 3, 6, 12 months and the patients were checked every 12 months.

RESULTSA total of 42 implants were loaded immediately. From March 1999 to December 2003, no implants were lost during follow-up (range 3 to 49 months, mean of 28 months). No infections, nerve or sinus damage or other sequelae occurred. No implants exhibited peri-implant radiolucencies. Moreover, immediate loading seems to increase the ossification of the alveolar bone around endosseous implants. Patients were satisfied with the treatment.

CONCLUSIONSThe data and the experience described in this study indicate that immediate loading with restorations using appropriate surgical and restorative techniques can predicate the completely edentulous and partially edentulous mandible in some cases. Further study is needed to determine the long-term result of immediately loaded implants.

Adult ; Dental Abutments ; Dental Implantation, Endosseous ; methods ; Dental Implants ; Dental Prosthesis Design ; Dental Prosthesis Retention ; instrumentation ; Dental Prosthesis, Implant-Supported ; Denture, Complete, Immediate ; Denture, Partial, Immediate ; Female ; Humans ; Jaw, Edentulous ; surgery ; Jaw, Edentulous, Partially ; rehabilitation ; surgery ; Male ; Middle Aged

OBJECTIVETo evaluate clinical results of implant supported telescopic overdenture.

METHODS21 patients with edentulous jaws underwent telescopic overdenture restoration. A total of 28 prostheses were fabricated. Of them, 13 were in the upper jaws, 15 in the lower jaws. Among 139 placed implants, 74 were Camcog, 28 IMZ, and 37 Frialit-2. The secondary crown was fabricated by electroforming technique and wax-lost cast method. Clinical examination and radiographs were conducted. Changes in the marginal bone level around the implants were evaluated with radiograph. The mean follow-up time was 26.5 months (range 12 - 39 months).

RESULTSThis type of restoration could provide sufficient stability and maintain peri-implant hygiene easily. Peri-implantitis and prosthetic complications were not observed. Marginal bone around implants was stable. No implant was lost during the loading time.

CONCLUSIONSThe preliminary clinical results of this research showed that implant supported telescopic overdentures were predictable for edentulous patients.

Aged ; Crowns ; Dental Prosthesis, Implant-Supported ; methods ; Denture, Overlay ; Female ; Follow-Up Studies ; Humans ; Jaw, Edentulous ; surgery ; Male ; 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

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

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*

OBJECTIVETo evaluate the application and the effect of edentulous ridge expansion(ERE) technique in maxillary endossenous implant placement.

METHODS49 patients with maxillary alveolar ridge atrophy received edentulous ridge expansion using condenser. In order to be similar to natural root, dental implants were selected and placed to tooth missed sites according to the requirements of aesthetics, function and dimension.

RESULTS49 patients with atrophied alveolar ridge received 86 implants. The labio-lingual width augmented from 3.3 to 5.4 mm and the alveolar ridge height from 2 to 7 mm 6 months after operation. The implants osseintergrated tightly with alveolar bone and second-step prosthesis was performed 6 months after implant placement.

CONCLUSIONThe edentulous ridge expansion technique can meet the requirements of aesthetics and function and is applicable to endossenous implant placement in maxilla. The method is simple and valuable to clinical application.

Adolescent ; Adult ; Alveolar Ridge Augmentation ; methods ; Atrophy ; surgery ; Dental Implantation, Endosseous ; methods ; Female ; Gingiva ; pathology ; Humans ; Jaw, Edentulous, Partially ; surgery ; Male ; Maxilla ; Middle Aged ; Osseointegration

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

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