The correlation between residual bone height and the ultimate bone height was found to be moderately positive (r = 0.43) and statistically significant (P = 0.0002). Residual bone height showed a moderate negative correlation with augmented bone height, yielding a correlation coefficient of -0.53 and a statistically significant p-value of 0.0002. Experienced clinicians consistently demonstrate comparable results following trans-crestally performed sinus augmentations. The pre-operative residual bone height, as assessed by CBCT and panoramic radiographs, yielded comparable results.
CBCT pre-operative measurements of mean residual ridge height displayed a reading of 607138 mm. This finding correlated well with the analogous measurement of 608143 mm from panoramic radiographs, and the disparity was statistically insignificant (p=0.535). No issues were encountered during the postoperative healing process in any case. At the six-month point, the thirty implants were successfully osseointegrated. Operators EM and EG yielded final bone heights of 1261121 mm and 1339163 mm, respectively; the mean bone height was 1287139 mm (p=0.019). In a comparable manner, the mean post-operative bone height augmentation was 678157 mm. Specifically, operator EM's gain was 668132 mm, while operator EG's was 699206 mm, resulting in a p-value of 0.066. A moderate positive correlation was observed in the relationship between residual bone height and ultimate bone height, quantified by a correlation coefficient of 0.43 and a statistically significant p-value of 0.0002. A moderate inverse correlation was found between residual bone height and augmented bone height, yielding a statistically significant p-value of 0.0002 (r = -0.53). Sinus augmentation, when performed trans-crestally, consistently demonstrates reliable results, with limited discrepancies between experienced practitioners. Consistent estimations of pre-operative residual bone height were provided by both CBCT and panoramic radiographic imaging.

Oral dysfunction, stemming from the congenital absence of teeth in children, be it syndromic or non-syndromic, can have wide-ranging repercussions, including general health concerns and socio-psychological problems. This case showcased a 17-year-old female with severe nonsyndromic oligodontia, marked by the absence of 18 permanent teeth and a notable class III skeletal structure. Furnishing functional and aesthetically pleasing outcomes for temporary rehabilitation during development and lasting rehabilitation in adulthood presented a demanding task. The originality of the oligodontia management technique is illustrated in two distinct sections of this case report. To achieve a larger bimaxillary bone volume, the LeFort 1 osteotomy advancement procedure is performed concurrently with parietal and xenogenic bone grafting, ensuring that adjacent alveolar processes can continue to grow without impeding future implant placement. Preserving natural teeth for proprioception and utilizing screw-retained polymethyl-methacrylate immediate prostheses in prosthetic rehabilitation are crucial for evaluating the needed vertical dimensional changes and making the functional and aesthetic outcomes more predictable. The intellectual workflow's difficulties and this specific case can be documented in this article, which should be saved as a technical note.

Implant component fractures, while comparatively rare among dental implant complications, represent a clinically significant concern. Implants with smaller diameters, due to their mechanical attributes, hold a higher risk profile for such complications. Our laboratory and FEM study sought to determine the mechanical distinctions between 29 mm and 33 mm diameter implants with conical connections, operating under standardized static and dynamic loads, all in accordance with ISO 14801-2017. Finite element analysis examined how stress was distributed across the tested implant systems under a 300 N force applied at a 30-degree incline. Static tests were conducted employing a 2 kN load cell, applying the force to the experimental specimens at a 30-degree angle to the implant-abutment axis, with a 55 mm lever arm. Fatigue experiments, using a descending load sequence at a frequency of 2 Hertz, were performed until three samples endured 2 million cycles without sustaining any damage. underlying medical conditions Finite element analysis of the abutment's emergence profile demonstrated the most significant stress concentration at 5829 MPa for the 29 mm implant and 5480 MPa for the 33 mm implant complex. A mean maximum load of 360 N was recorded for 29 mm diameter implants, in comparison with a mean maximum load of 370 N for 33 mm diameter implants. check details Observations demonstrated that the fatigue limit was 220 N for one instance and 240 N for another. Favorable results were obtained with 33 mm diameter implants, yet the difference between the implants under examination was clinically negligible. Conical implant-abutment connections are believed to distribute stress effectively in the implant neck region, leading to enhanced fracture resistance.

To ensure success, the following metrics are considered: satisfactory function, esthetics, phonetics, long-term stability, and minimal complications. The current case report details a subperiosteal implant in the mandible, demonstrating successful function for 56 years. Success in the long term was a consequence of many factors, including careful patient selection, adherence to essential anatomical and physiological knowledge, the superior design of the implant and superstructure, meticulous surgical technique, the application of appropriate restorative principles, scrupulous hygiene, and a well-structured re-care schedule. This case showcases the intensive teamwork between the surgeon, restorative dentist, laboratory staff, and the patient's unwavering compliance. This patient's journey from dental cripple to restored oral function was facilitated by the mandibular subperiosteal implant procedure. What stands out in this case is its exceptional and longest successful treatment duration, unprecedented in any implant treatment's history.

Bar-retained overdentures, supported by implants, with cantilever extensions, when subjected to high posterior loading, induce more bending stress on implants close to the cantilever and escalate stress within the overdenture parts. To mitigate unwanted bending moments and consequential stresses, a new abutment-bar structural connection was designed, increasing the rotational movement of the bar structure relative to its abutments in this investigation. The bar structure's copings were altered to incorporate two spherical surfaces, centered on the top surface of the coping screw head's centroid. A modified overdenture was fashioned by adapting a four-implant-supported mandibular overdenture to a novel connection design. Employing finite element analysis, the deformation and stress distribution were evaluated in both classical and modified models, which showcased bar structures with cantilever extensions at the first and second molar positions. The same analytical approach was applied to the overdenture models without these cantilever extensions. Cantilever extensions were incorporated into real-scale prototypes of both models, which were assembled onto implants embedded within polyurethane blocks, and then subjected to fatigue testing procedures. To evaluate the strength of the implants, pull-out testing was performed on both models' devices. By implementing the new connection design, the bar structure's rotational mobility was improved, bending moments were minimized, and stress levels in the peri-implant bone and overdenture components, including those with cantilevers, were decreased. Our research conclusively confirms the effects of bar rotational mobility on abutments, thereby validating the critical role of the abutment-bar connection geometry in structural design.

A key objective of this research is to formulate a treatment protocol for dental implant-associated neuropathic pain, integrating medical and surgical strategies. The methodology employed the good practice guidelines from the French National Authority for Health, and the Medline database was searched for the pertinent data. A working group has crafted an initial set of professional recommendations, mirroring a collection of qualitative summaries. An interdisciplinary reading committee's members adjusted the sequential drafts. Ninety-one publications underwent screening; ultimately, twenty-six were chosen to inform the recommendations, encompassing one randomized clinical trial, three controlled cohort studies, thirteen case series, and nine case reports. Should post-implant neuropathic pain manifest, a comprehensive radiographic evaluation, encompassing at least a panoramic radiograph (orthopantomogram) or ideally a cone-beam computed tomography scan, is advisable to ascertain the implant tip's positioning—more than 4 mm from the mental nerve's anterior loop for anterior implants and at least 2 mm from the inferior alveolar nerve for posterior implants. Early administration of a high dose of steroids, possibly involving the removal of the implant either partially or entirely ideally within the 36 to 48 hours following placement, is recommended. Anticonvulsants and antidepressants, when utilized in concert, may contribute to reducing the risk associated with the chronic pain condition. Dental implant surgery-related nerve lesions require prompt treatment within 36 to 48 hours post-implant, including potential complete or partial implant removal, and concurrent pharmacological intervention.

Preclinically, bone regeneration procedures using polycaprolactone biomaterial have exhibited remarkable expedition. bioorthogonal catalysis These two clinical cases in the posterior maxilla represent the initial clinical application, as detailed in this report, of a customized 3D-printed polycaprolactone mesh for augmenting the alveolar ridge. For dental implant therapy, two patients requiring significant ridge augmentation were chosen.