Journal of Osseointegration 2019-04-08T16:18:32+02:00 Cristina Calchera Open Journal Systems Journal of Osseointegration Comparative evaluation of hard and soft tissue parameters by using short and standard dental implants for prosthetic rehabilitation of posterior mandible: a split mouth study 2019-04-08T16:18:31+02:00 Dhananjay Singh Yadav Farhan Durrani Faizia Rahman Patricia Ome Borang Shivam Kesarwani S M Karthickraj <p class="p1"><strong>Aim </strong>The length of fixtures is always standardized with the concept for better bone to implant contact and successful osseointegration. Lots of studies have justified the use of short implants of less than 10 mm as an alternative for resorbed ridges in maxilla and mandible. The present project was conducted to check the viability of short implants in complex prosthetic rehabilitations.</p> <p class="p1"><span class="s1"><strong>Materials and methods</strong> Eleven patients received a total of 18 short implants (3.3/6 mm - 4.2/9.5mm) and 18 standard implants (3.75/11 mm and 4.5/11.5 mm) in the posterior mandible. Marginal bone loss was evaluated immediately after the delivery of the prosthesis, then after 3, 6, 12 and 18 months. Same measurements were done for standard implants as the study design was split mouth.</span></p> <p class="p1"><strong>Results </strong>The survival rate of short implants 18 months after prosthesis delivery was 94.4% and it was 100% for standard implants. There was no significant difference between implants at the time intervals of 6 and 18 month’s post-delivery of crowns and bridges. Mean crestal bone loss was 1.77±0.22 mm and 2.03±0.21 mm for short and standard implants respectively at 18 months of follow up, which was statistically significant.<span class="Apple-converted-space">&nbsp; </span>One short implant failure was seen before the loading of prosthesis.</p> <p class="p1"><strong>Conclusion </strong>Short implants may be considered as an alternative for complex augmentation procedures in mandible and maybe in maxilla too. Patient should be educated before for the reduced survival rate of short implants compared to standard implants.</p> 2019-03-01T10:37:27+01:00 ##submission.copyrightStatement## Detecting bone changes along dental implants, after immediate or delayed loading, using digital subtraction on cropped panoramic radiographs. A prospective clinical trial with minimum 3-year follow up 2019-04-08T16:18:31+02:00 Efstathia Andrikopoulou Stefanos Kourtis Spyridon Damaskos Konstantinos Tsiklakis <p class="p1"><span class="s1"><strong>Aim </strong>The aim of this study was to assess bone changes along implants after immediate or delayed loading, using subtractions of digital images originated from cropped panoramic radiographs and visual evaluation.</span></p> <p class="p1"><span class="s1"><strong>Materials and methods</strong> Eleven patients received 4 Ankylos implants interforaminal in the mandible. In 7 patients the implants were loaded immediately and 4 followed delayed loading. All patients were restored with a telescopic overdenture with Syncone abutments. From each patient 3 panoramic radiographs (PRs) were obtained: upon delivery of the restoration (T1), 6 months later (T2) and after 3 years (T3). 33 implants were finally selected. The radiographs were analyzed using the Emago® Software. The grey scale values were measured either manually (Stage A) or automatically (Stage B) in six areas (neck, middle and apex; both mesially and distally) along the implants’ sides to evaluate the bone density during clinical function. Images were also visually evaluated by five observers to detect bone changes at the cervical implant area.</span></p> <p class="p1"><span class="s1"><strong>Results </strong>Strong positive correlation between the two stages (A and B) was found in all 3 examinations (Pearson’s r 0.84-0.98). The t-test showed no statistically significant differences in grey level values between immediate and delayed loading (p&lt;0.05) and no statistically significant changes in the visual evaluation among implants undergoing<span class="Apple-converted-space">&nbsp; </span>either immediately or delayed loading (p&lt;0.05).</span></p> <p class="p1"><span class="s1"><strong>Conclusions </strong>Emago® is a valuable method for bone level assessment around implants’ neck. The grey value measurements of the bone adjacent to the implants that have been loaded either immediately or delayed do not significantly differ after 3 years of fuction. The visual assessment of the PRs images supports these findings.</span></p> 2019-03-01T10:23:36+01:00 ##submission.copyrightStatement## A modified graftless sinus lift: case report 2019-04-08T16:18:31+02:00 Salvatore d'Amato Nicola Sgaramella Gianpaolo Tartaro Mario Santagata <p class="p1"><strong>Aim </strong>AAA (Alveolar Antral Artery) injuries are the most frequent intra-operative lesions occurring during maxillary sinus surgery. The aim of this work is to evaluate the role of preoperative CBCT and the effectiveness of piezosurgery to prevent bleeding. Furthermore, a modified Lundgren technique is presented, that can significantly reduce the risk of bleeding and of damages to maxillary sinus structures.</p> <p class="p1"><strong>Methods </strong>A case of maxillary sinus lift with immediate implants placement is reported. Preoperative CBCT scan allowed to study the course in the anterior-lateral sinus wall of the AAA and the variability of its patency. Antrostomy was<span class="Apple-converted-space">&nbsp; </span>performed with piezosurgery device.</p> <p class="p1"><strong>Results </strong>Through preoperative identification of the course of the artery and trough this modified piezosurgery technique, it was possible to preserve membrane and artery integrity. Schneider membrane therefore was detached from the sinus floor, and contextually three implants were positioned.</p> <p class="p1"><strong>Conclusions</strong> In the preoperative phase, a study with CBCT scan is suggested, in order to identify intraosseous arterial<span class="Apple-converted-space">&nbsp; </span>course, patency variability and the distance from alveolar ridge. Furthermore, it is strongly recommended the use of piezosurgery, to preserve vascular structures and soft tissues. A modified Lundgren technique can be useful to avoid the use of round bur and thus reduce the risk of perforation of the underlying structures.</p> 2019-03-01T10:15:40+01:00 ##submission.copyrightStatement## A systematic review about randomized clinical trials on digital impressions on sound teeth 2019-04-08T16:18:32+02:00 Annalisa Biagioni Marina Pecciarini Marco Ferrari <p class="p1"><strong>Aim</strong> In the dental literature there are a number of studies about digital impressions. They mainly are focused on the reproducibility of the measurements or on the validity, accuracy, trueness and precision of the scans compared with conventional materials, or on the reaction of patients to these new methods. The purpose of this study was to systematically review existing clinical trials reporting about intra oral scanning procedures on sound teeth.</p> <p class="p1"><strong>Materials and methods</strong><span class="Apple-converted-space">&nbsp; </span>PubMed, Cochrane Library and Web of Science databases were electronically searched and enriched by hand searches. The query terms “randomized clinical trials”, “in vivo study”, “sound teeth”, “intraoral scanner”, “digital dentistry” combined with the Boolean operators “OR” and “AND” have been used. No language or time limitation was applied.<span class="Apple-converted-space">&nbsp; </span>Selection criteria: oly randomized in vivo studies where sound teeth had been scanned intraorally were considered.</p> <p class="p1"><strong>Results</strong> Twenty-four out of more than three hundred studies were selected for the review.</p> <p class="p1"><strong>Conclusion</strong> In literature there are enough randomized clinical trials about sound teeth. They report about many clinical aspects.</p> 2019-03-01T10:10:26+01:00 ##submission.copyrightStatement##