scholarly journals Early Bone Formation around Immediately Loaded Transitional Implants Inserted in the Human Posterior Maxilla: The Effects of Fixture Design and Surface

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Carlo Mangano ◽  
Jamil Awad Shibli ◽  
Jefferson Trabach Pires ◽  
Giuseppe Luongo ◽  
Adriano Piattelli ◽  
...  
Keyword(s):  
Bone Formation ◽  
Wilcoxon Test ◽  
Fixture Design ◽  
Knife Edge ◽  
Surface Control ◽  
Posterior Maxilla ◽  
Surface Test ◽  
Bone To Implant Contact ◽  
The Mean ◽  
Early Bone Formation

Aim. To evaluate the effects of fixture design and surface on the early bone formation around immediately loaded implants inserted in the human posterior maxilla. Materials and Methods. Ten totally edentulous subjects received two transitional implants: one tapered implant with knife-edge threads/nanostructured calcium-incorporated surface (test: Anyridge®, Megagen, Gyeongbuk, South Korea) and one cylindrical implant with self-tapping threads/sandblasted surface (control: EZPlus®, Megagen). The implants were placed according to a split-mouth design and immediately loaded to support an interim complete denture; after 8 weeks, they were removed for histologic/histomorphometric analysis. The bone-to-implant contact (BIC%) and the bone density (BD%) were calculated. The Wilcoxon test was used to evaluate the differences. Results. With test implants, a mean BIC% and BD% of 35.9 (±9.1) and 31.8 (±7.5) were found. With control implants, a mean BIC% and BD% of 29.9 (±7.6) and 32.5 (±3.9) were found. The mean BIC% was higher with test implants, but this difference was not significant (p=0.16). Similar BD% were found in the two groups (p=0.9). Conclusions. In the posterior maxilla, under immediate loading conditions, implants with a knife-edge thread design/nanostructured calcium-incorporated surface seem to increase the peri-implant endosseous healing properties, when compared to implants with self-tapping thread design/sandblasted surface.

Impact of Smoking on Human Bone Apposition at Different Dental Implant Surfaces: A Histologic Study in Type IV Bone

2010 ◽  
Vol 36 (2) ◽  
pp. 85-90 ◽  
Author(s):  
Susana d'Avila ◽  
Leonardo Delfino dos Reis ◽  
Adriano Piattelli ◽  
Kelly C. S. Aguiar ◽  
Marcelo de Faveri ◽  
...  
Keyword(s):  
Healing Time ◽  
Machined Surface ◽  
Implant Surface ◽  
Bone Apposition ◽  
Type Iv ◽  
Posterior Maxilla ◽  
Bone To Implant Contact ◽  
The Mean ◽  
Edentulous Patients ◽  
Etched Surface

Abstract Smoking has adverse effects on peri-implant bone healing and can cause bone loss around successfully integrated implants placed on type IV bone. This study evaluated the influence of implant surface topography of microimplants retrieved from posterior maxilla of smokers after 2 months of unloaded healing. Seven partially edentulous patients received 2 microimplants (machined and sandblasted acid-etched surface) each during conventional implant surgery. Histometric evaluation showed that the mean bone to implant contact was 10.40 ± 14.16% and 22.19 ± 14.68% to machined and sandblasted acid-etched surfaces, respectively (P < .001). These data suggest that the sandblasted acid-etched surface presented better results than the machined surface after a short healing time in smokers.

Bone-to-Implant Contact and New Bone Formation Within Human Freeze-Dried Bone Blocks Grafted Over Rabbit Calvaria

2017 ◽  
Vol 32 (4) ◽  
pp. 768-773 ◽  
Author(s):  
Zvi Artzi ◽  
Karen Anavi-Lev ◽  
Avital Kozlovsky ◽  
Liat Chaushu ◽  
Frank Schwarz ◽  
...  
Keyword(s):  
Bone Formation ◽  
New Bone Formation ◽  
Freeze Dried ◽  
Bone To Implant Contact

Section plane selection influences the results of histomorphometric studies: the example of dental implants

2012 ◽  
Vol 57 (5) ◽  
Author(s):  
Sigmar Kopp ◽  
Mareike Warkentin ◽  
Ferenc Öri ◽  
Peter Ottl ◽  
Günther Kundt ◽  
...  
Keyword(s):  
Section Plane ◽  
Section Thickness ◽  
Implant Surface ◽  
Bone Implant ◽  
Osseointegrated Implants ◽  
Section Technique ◽  
Significant Difference ◽  
Bone To Implant Contact ◽  
The Mean ◽  
Dependent Samples

AbstractThis study was designed to determine and statistically analyze bone-to-implant contact (BIC) values for human specimens segmented in at least two different locations.Samples of human bone with fractured osseointegrated implants were obtained from six patients. Sections were prepared, dehydrated, and resin infiltrated. Undecalcified bone sections were produced using the thin-section technique according to Donath, ultimately obtaining a section thickness of approximately 20 μm. Fifteen specimens were available for histomorphometry. The bone sections were digitized and analyzed. The bone-to-metal contact (BMC) parameter was determined histomorphometrically. The BMC was returned in terms of the visibly bone-covered implant surfaces as a percentage of the total implant surface shown.The values obtained for the six implants were arranged as six maximum-distance pairs and tested for significance using the t-test for dependent samples. The mean difference in BIC was 11.69±9.79%. The two-sided test showed a significant difference (p=0.033).The accidental or deliberate choice of section plane for a bone-implant block has an influence on the BIC value. To make BIC values more comparable, a standardization of section planes is desirable.

scholarly journals Maxillary Sinus Augmentation with Decellularized Bovine Compact Particles: A Radiological, Clinical, and Histologic Report of 4 Cases

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Antonio Scarano
Keyword(s):  
Postoperative Period ◽  
Compact Bone ◽  
Automated System ◽  
Graft Material ◽  
Sinus Augmentation ◽  
Endosseous Implants ◽  
Implant Placement ◽  
Posterior Maxilla ◽  
The Mean ◽  
Vertical Height

Background. One of the most problematic regions for endosseous implants is the posterior maxilla, not only having poor bone density, but also lacking adequate vertical height as a result of sinus pneumatization. The purpose of the present study was a radiologic, histological, and histomorphometrical evaluation, in humans, of specimens retrieved from sinuses augmented with decellularized bovine compact particles, after a healing period of 6 months. Methods. Four patients, with atrophic resorbed maxillas, underwent a sinus lift augmentation with decellularized bovine compact bone from bovine femur. The size of the particles used was 0.25–1 mm. A total of four grafts and 5 biopsies were retrieved and processed to obtain thin ground sections with the Precise 1 Automated System. Results. The mean volume after graft elevation calculated for each of the 4 patients was 2106 mm3 in the immediate postoperative period (5–7 days), ranging from 1408.8 to 2946.4 mm3. In the late postoperative period (6 months) it was 2053 mm3, ranging from 1339.9 to 2808.9 mm3. Histomorphometry showed that newly formed bone was 36±1.6% and marrow spaces were 34±1.6%, while the residual graft material was 35±1.4%. Conclusion. In conclusion, based on the outcome of the present study, Re-Bone® can be used with success in sinus augmentation procedures and 6 months are considered an adequate time for maturation before implant placement.

scholarly journals Audio-visual media to improve sexual-reproduction health knowledge among adolescent

2020 ◽  
Vol 9 (1) ◽  
pp. 138
Author(s):  
Sitti Nur Djannah ◽  
Sulistyawati Sulistyawati ◽  
Tri Wahyuni Sukesi ◽  
Surahma Asti Mulasari ◽  
Fatwa Tentama
Keyword(s):  
Sexual Reproduction ◽  
Junior High School ◽  
Health Knowledge ◽  
Visual Media ◽  
Wilcoxon Test ◽  
Post Intervention ◽  
Before And After ◽  
The Mean ◽  
The Difference ◽  
Source Of Information

<span>Lacking knowledge among adolescents affects their understanding of some problems related to sexual-reproduction health. Electronic media recognized as the favored source of information for adolescents. This research aimed to assess the effect of audio-visual media to the increasing of sexual-reproduction knowledge. We conducted a before and after without control informal experimental study design into 153 students in the 1st-3rd grade of junior high school. The effect of the intervention was assessed through the difference between pre- and post-intervention by using the Wilcoxon test. The mean score of the respondent pre and post-intervention was significantly increasing. The audiovisual increased the knowledge of the adolescent regarding sexual-reproduction health</span>

Histologic and Radiographic Evaluation of Progressive Loading on Implants Placed into Extraction Sockets

2007 ◽  
Vol 330-332 ◽  
pp. 1413-1416 ◽  
Author(s):  
Yu Ban ◽  
Ping Gong ◽  
Shao An Wang ◽  
N. Geng ◽  
X.G. Liu ◽  
...  
Keyword(s):  
Bone Loss ◽  
Radiographic Evaluation ◽  
Contact Ratio ◽  
Control Groups ◽  
Bone Implant ◽  
Paired Student ◽  
Loading System ◽  
Bone To Implant Contact ◽  
The Mean ◽  
Progressive Loading

To evaluate the effects of progressive loading on implants placed into extraction sockets. 4 beagle dogs were extracted bilateral 3rd, 4th and 2nd premolar and immediately inserted the implant at first surgery (0d), 14d and 21d. Using the newly developed vertical occlusion loading system, progressive loading procedures were taken 24h after insertion. The vertical bone loss (VBL) and bone-to-implant contact ratio (BIC) was measured by image analysis software and analyzed using the paired student t test. After 28d period of healing, each animal was sacrificed and the samples were evaluated by scanning electron microscopy (SEM). The mean vertical bone loss in control groups was larger than that of the experimental groups at 14, 21 and 28 day (P<0.05). SEM showed that the mineralization rate of experimental groups was faster than the control groups. The bone-implant contact ratios in experimental groups were more than that in the control groups. The differences were statistically significant (P<0.05). Compared with non-loading implant, progressive loading can promote osseointegration and decrease vertical bone loss. Progressive loading of implants placed into extraction sockets can be performed without interfering with the osseointegration process.

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