排序方式: 共有25条查询结果,搜索用时 15 毫秒
21.
22.
Walaa Magdy Ahmed BDS MSc Dip PhD FRCDC Ahlam Alhazmi BDS Mazin Talal Alharbi BDS SSC-Prosthodontics Amr Ahmed Azhari BDS MSc CAGS MSBI PhD Hatem Alqarni BDS MS Dip DABP FACP FRCD Hesham F. Shaheen BDS SSC-Prosthodontics Ehab Tawfiq Mitwalli BDS SSC-Periodontics 《Journal of prosthodontics》2023,32(8):662-668
This article summarizes the clinical steps involved in maxillary and mandibular complete-arch implant rehabilitation using a complete digital workflow. The maxillary arch was recorded using the double digital scan technique, and the mandibular arch using the triple digital scan technique. The digital protocol used in this case report allowed the recording of implant positions via scan bodies, soft tissues, and, most importantly, the interocclusal relationship in the same visit. A new technique for mandibular digital scan was described that uses soft tissue landmarks by creating windows in the patient's provisional prostheses to superimpose the three digital scans and consequently fabricate and verify the maxillary and mandibular prototype prostheses and definitive complete-arch zirconia prostheses. 相似文献
23.
24.
Kensuke Igarashi DDS PhD Dr med dent Hiroki Katagiri DDS PhD Samir Abou-Ayash PD Dr med dent FZ SSO Martin Schimmel MAS Prof Dr med dent Kelvin I. Afrashtehfar DDS MSc Dr med dent FDSRCS FRCDC 《Journal of prosthodontics》2023,32(2):154-161
Purpose
To assess the retentive force of telescopic crowns using polyetherketoneketone (PEKK) high-performance polymer in relation to conventional materials over a long period of time in an in vitro setting.Materials and Methods
Thirty-six sets of primary and secondary crowns were fabricated as per the double crown-retained prostheses approach. Six samples were included in each of the five test groups (1: zirconia/PEKK [Zr/PEKK]; 2: titanium/PEKK [Ti/PEKK]; 3: cobalt-chrome/PEKK [CoCr/PEKK]; 4: PEKK/PEKK; and 5: gold/PEKK [Au/PEKK]) and the single control group (gold/galvano-gold [Au/GA]). The insertion-removal test was performed for 20,000 cycles, and the surface condition was observed. Retentive forces were analyzed using two-way ANOVA (α<0.05).Results
The retention forces in groups Zr/PEKK and Ti/PEKK significantly decreased over time (group 1: p = 0.035 and group 2: p = 0.001), whereas retentive force increased significantly in groups PEKK/PEKK, Au/PEKK, and control (group 4: p = 0.001, group 5: p = 0.008, and control: p = 0.042). Similar wear was observed on the primary crown in groups PEKK/PEKK, gold/PEKK, and control.Conclusions
Groups PEKK/PEKK and Au/PEKK showed a transition of retentive force similar to the control group. Groups PEKK/PEKK and Au/PEKK had similar wear on the surface compared to control. Therefore, PEKK has a promising clinical potential. 相似文献25.
Turki S. Alkhallagi BDS MHA MSc FRCDC Thamer Y. Marghalani BDS DScD Abdulrahman J. Alhaddad BDS DScD Osama A. Qutub BDS DScD Samar Abuzinadah BDS DScD Maha H. Bundugji BDS MDS 《Journal of esthetic and restorative dentistry : official publication of the American Academy of Esthetic Dentistry ... [et al.]》2023,35(4):687-697