Three-Dimensional Volume Change of Grafted Bone in the Maxillary Sinus

2014 ◽  
Vol 29 (1) ◽  
pp. 178-184 ◽  
Author(s):  
Fabio Mazzocco ◽  
Diego Lops ◽  
Luca Gobbato ◽  
Alessandra Lolato ◽  
Eugenio Romeo ◽  
...  
Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2159
Author(s):  
Giovanna Iezzi ◽  
Antonio Scarano ◽  
Luca Valbonetti ◽  
Serena Mazzoni ◽  
Michele Furlani ◽  
...  

Maxillary sinus augmentation is often necessary prior to implantology procedure, in particular in cases of atrophic posterior maxilla. In this context, bone substitute biomaterials made of biphasic calcium phosphates, produced by three-dimensional additive manufacturing were shown to be highly biocompatible with an efficient osteoconductivity, especially when combined with cell-based tissue engineering. Thus, in the present research, osteoinduction and osteoconduction properties of biphasic calcium-phosphate constructs made by direct rapid prototyping and engineered with ovine-derived amniotic epithelial cells or amniotic fluid cells were evaluated. More in details, this preclinical study was performed using adult sheep targeted to receive scaffold alone (CTR), oAFSMC, or oAEC engineered constructs. The grafted sinuses were explanted at 90 days and a cross-linked experimental approach based on Synchrotron Radiation microCT and histology analysis was performed on the complete set of samples. The study, performed taking into account the distance from native surrounding bone, demonstrated that no significant differences occurred in bone regeneration between oAEC-, oAFMSC-cultured, and Ctr samples and that there was a predominant action of the osteoconduction versus the stem cells osteo-induction. Indeed, it was proven that the newly formed bone amount and distribution decreased from the side of contact scaffold/native bone toward the bulk of the scaffold itself, with almost constant values of morphometric descriptors in volumes more than 1 mm from the border.


2017 ◽  
Vol 23 ◽  
pp. 1394-1400 ◽  
Author(s):  
Eliza Dragan ◽  
Guillaume A. Odri ◽  
Gabriel Melian ◽  
Danisia Haba ◽  
Raphael Olszewski

Author(s):  
Yuju Jeon ◽  
Jonghak Kim ◽  
Haeseong Jang ◽  
Jeongin Lee ◽  
Min Gyu Kim ◽  
...  

Reversible lithium metal plating and stripping is required for durable operation of lithium metal batteries. Three-dimensional architecture has been employed for accommodating volume change of lithium metal during repeated plating...


2019 ◽  
Vol 21 (6) ◽  
pp. 1148-1155
Author(s):  
Jin‐Ju Kwon ◽  
JaeJoon Hwang ◽  
Yong‐Deok Kim ◽  
Sang‐Hun Shin ◽  
Bong‐Hae Cho ◽  
...  

2020 ◽  
Vol 36 (03) ◽  
pp. 268-275
Author(s):  
Martin Braun ◽  
Konstantin Frank ◽  
David L. Freytag ◽  
Robert H. Gotkin ◽  
Nirusha Lachman ◽  
...  

AbstractA novel treatment approach to address the nasolabial fold is the insertion facial suspension threads. However, there is a paucity of data available to guide insertion techniques and material selection. Three female and two male cephalic specimens of Caucasian ethnicity (73.6 ± 6.5 years; 21.41 ± 2.2 kg/m2) were included into this experimental split-face study. One facial side was treated with polycaprolactone (PCL) thread: 180 mm, bidirectional, 18G 100 mm cannula, 20 degrees trajectory, preauricular approach whereas the contralateral side was treated with polydioxanone (PDO) thread: 100 mm, bidirectional, 19G, 60 mm cannula, 50 degrees trajectory, infraorbital approach. Three-dimensional imaging outcome measures included vertical and horizontal skin displacement and volume changes at the nasolabial sulcus, at the labiomandibular sulcus, and along the jawline. Comparing PCL 180 mm 20 degrees to PDO 100 mm 50 degrees: vertical lifting effect 1.42 ± 2.63 mm versus 1.24 ± 1.88 mm (p = 0.906); horizontal lifting effect 3.42 ± 1.44 mm versus –2.02 ± 1.84 mm (p = 0.001); nasolabial volume change –0.80 ± 0.65 mL versus –0.52 ± 0.17 mL (p = 0.367); labiomandibular volume change –0.45 ± 0.42 mL versus –0.16 ± 0.16 mL (p = 0.191); jawline volume change 0.02 ± 0.43 mL versus –0.01 ± 0.21 mL (p = 0.892). The study provides objective evidence for the short-term effectiveness of facial suspension threads in treating the nasolabial folds. The results point toward a better aesthetic outcome when utilizing long facial suspension threads that can effect full-face changes as compared with short facial suspension threads.


2019 ◽  
Vol 7 (11) ◽  
pp. 6090-6098 ◽  
Author(s):  
Yangyang Feng ◽  
Chaofan Zhang ◽  
Bing Li ◽  
Shizhao Xiong ◽  
Jiangxuan Song

We report a novel concept for a stable Li metal anode via the synergistic effect of a three-dimensional skeleton and stable artificial SEI.


1997 ◽  
Vol 111 (9) ◽  
pp. 820-824 ◽  
Author(s):  
Lipa Bodner ◽  
Ferit Tovi ◽  
Jacob Bar-Ziv

AbstractPurposeTo evaluate the images obtained by CT in diagnosis and treatment plan of teeth in the maxillary sinus.MethodsTwelve patients with teeth in the maxillary sinus were studied by plain film radiography(PFR) and by CT with a dental software programme, which displays multiple panoramic and cross-sectional views of the mandible and maxilla. The three-dimensional morphology of the tooth, its inclination, proximity to the sinus wall, surgical planning and prediction of prognosis and complications were estimated on both PFR and on CT scans and scored.ResultsThe radiographical features interpreted from PFR were fair or poorly diagnosed whereas CT provided excellent features. The surgical approach of choice was based on CT interpretation.ConclusionCT is useful for diagnosis and treatment planning of teeth in the maxillary antrum.


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