Purpose: To compare the 2D and 3D positional accuracy of four guided surgical protocols using an analysis of linear and angular deviations.
Methods: DICOM and .STLs files obtained from a CBCT and a digital impression were superimposed with software to plan implant position. Fifty-six patients were subdivided into 4 groups: FGA group (template support [Ts]: teeth [T]; bed preparation [Bp]: fully guided [FG]; implant insertion [Ii]: 3D template [3Dt]; device [D]: manual adapter [MA], FGM group (Ts: T; Bp: FG; Ii: 3Dt; D: fully guided mounter [FGM]), PG group (Ts: T; Bp: FG; Ii: manual; D: none) and MS group (Ts: mucosa; Bp: FG; Ii: 3Dt; D: FGM). The position of 120 implants was assessed by superimposing the planned and final position recorded with a digital impression.
Results: In FGA group, 3D deviations were 0.92 ± 0.52 mm at the implant head and 1.14 ± 0.54 mm at the apex, and the angular deviation (ang. dev.) was 2.45 ± 1.24°. In FGM group, were 0.911 ± 0.44 mm (head) and 1.11 ± 0.54 mm (apex), and the ang. dev. was 2.73 ± 1.96°. In PG group, were 0.95 ± 0.47 mm (head) and 1.17 ± 0.488 mm (apex), and the ang. dev. was 3.71 ± 1.67°. In MS group, were 1.15 ± 0.45 mm (head) and 1.42 ± 0.45 mm (apex), and the ang. dev. was 4.19 ± 2.62°. Ang. dev. of MS group was different from the other groups (P < 0.05).
Conclusions: Guided surgery showed a sufficient accuracy.
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http://dx.doi.org/10.1016/j.jpor.2019.11.007 | DOI Listing |
Attach Hum Dev
December 2024
National Institute of Education, Nanyang Technological University, Singapore.
This study examined how children's secure base script knowledge and friendship quality were related to bullying and victimization experiences and their emotional, academic, and behavioral adjustment. Participants were 581 children (49.6% males) aged 9 to 13 years old and one of their main caregivers (74% mothers, 23.
View Article and Find Full Text PDFInfant Behav Dev
December 2024
RIKEN Center for Brain Science, Japan; Waseda University, Japan; Duke University, USA.
Cells Dev
December 2024
Department of Animal Science and Technology, Chung-Ang University, Anseong, Republic of Korea. Electronic address:
Research on early human development is crucial for understanding the origins of life and mechanisms underlying disease onset. However, these studies have significant challenges owing to ethical restrictions and technical limitations. Stem cell technology advancement has led to the development of blastoids to overcome these challenges.
View Article and Find Full Text PDFDev Comp Immunol
January 2025
Department of Animal Science and Technology, Chung-Ang University, 17546, Anseong, Republic of Korea. Electronic address:
Front Cell Dev Biol
July 2024
Department of Animal Science and Technology, Chung-Ang University, Anseong-Si, Gyeonggi-Do, Republic of Korea.
Phthalate esters (PAEs) are primary plasticizers and endocrine-disrupting chemicals (EDCs) that are extensively used in numerous everyday consumer products. Although the adverse effects of single PAEs have been studied, our understanding of the effect of multiple phthalate exposure on male germ cell vitality remains limited. Therefore, this study aimed to investigate the collective effects of a mixture of PAEs (MP) comprising diethyl-, bis (2-ethylhexyl)-, dibutyl-, diisononyl-, diisobutyl-, and benzyl butyl-phthalates in the proportions of 35, 21, 15, 15, 8, and 5%, respectively, on differentiated male germ cells using GC-1 spermatogonia (spg) cells.
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