The rate and stability of mandibular block bone graft in recent 5 years

Park, Jong-Cheol; Kim, Yun‐Ho; Choi, Hong-Seok; Oh, Jong-Shik; Shin, Sang‐Hun; Kim, Yong-Deok

doi:10.1186/s40902-017-0118-0

Cited by 7 publications

(6 citation statements)

References 22 publications

(18 reference statements)

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“…More thread exposures were observed when multiple prostheses were connected, when the crown to root ratio was not physiologic, or when non-submerged implantation was performed. These results suggest that early implant bone loss is more likely to occur as a result of the already established causes such as surgical trauma, occlusal overload, and microgap, regardless of the type of membrane used [21,22].…”

Section: Discussionmentioning

confidence: 84%

Efficacy of Collagen-Based Membranes in Alveolar Bone Augmentation

2018

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Collagen-based membranes (CBMs) have similar permissive bone formation capabilities when compared to non-absorbable membranes. CBMs have been classified as non-cross-linked membranes (NCLMs) and cross-linked membranes (CLMs) depending on whether the cross-linking between the collagen fibers was artificially increased. The purpose of this study is to evaluate the bone maintenance capacity between NCLMs and CLMs by comparing resorption of regenerated bone. The inclusion criteria consisted of: (1) The use of a CBM, either being an NCLM or CLM for coverage of grafted bone; (2) follow-up for more than one year; (3) the presence of the patient's orthopantomographic X-ray (OPTG) immediately following the installation of implants and one year after. The bone resorption observed in the OPTG was determined by measuring the number of exposed threads of the implant. The number of thread exposures in the implant was compared according to CBM types. OPTGs taken immediately following the installation of implants and at one year after installation were compared. The subject of the measurement was always the implant in which the greatest number of exposed threads were present in each patient. A total of 56 subjects and 97 implants were used in this study. There was no significant difference between NCLM and CLM groups (p > 0.05). However, there was a statistically significant difference (p = 0.02) between the groups when a bone graft was applied to both the maxilla and the mandible. The average number of thread exposures was less than 1.5. In this study, no comparison was made between commonly known causes of bone loss and membrane types.

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Section: Discussionmentioning

confidence: 84%

Efficacy of Collagen-Based Membranes in Alveolar Bone Augmentation

2018

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“…3,4 Thus, additional treatments such as bone augmentation and maxillary sinus elevation may be required for implant placement. [5][6][7][8][9][10] In completely edentulous patients, these anatomical limitations can be overcome by using the all-on-4 concept without these additional treatments. 11 In this concept, 4 implants are placed; 2 of the anterior implants are placed straight, and 2 of the posterior implants are placed tilted in the anterior portion of the edentulous jaw to allow immediate insertion of the fixed prostheses.…”

Section: Introductionmentioning

confidence: 99%

Stress Distribution on the Prosthetic Screws in the All-on-4 Concept: A Three-Dimensional Finite Element Analysis

Kim

Lim

et al. 2020

Journal of Oral Implantology

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The all-on-4 concept, which is used to rehabilitate edentulous patients, can present with mechanical complications such as screw loosening and fracture. The purpose of this study was to evaluate the stress patterns induced in the prosthetic screws by the different prosthetic screw and abutment designs in the all-on-4 concept using finite element analysis. Von Mises stress values on 6 groups of each screw type, including short and narrow screw, short abutment; short and wide screw, short abutment; long and wide screw, short abutment; short and narrow screw, long abutment; short and wide screw, long abutment; and long and wide screw, long abutment, were compared under a cantilever loading of 200 N that was applied on the farther posterior to the position of the connection between the distal implant and the metal framework. Posterior prosthetic screws showed higher stress values than anterior prosthetic screws. The stress values in posterior prosthetic screws decreased as the length and diameter increased. In conclusion, the long and wide screw design offers advantages in stress distribution when compared with the short and narrow design.

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“…Bone graft operations for dental implants have been performed on the cortical surface of alveolar bone [20]. The sufficient alveolar bone height and width should be sufficient for dental implant installation [21].…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the Bone Regeneration Effect of Recombinant Human Bone Morphogenic Protein-2 on Subperiosteal Bone Graft in the Rat Calvarial Model

Jang

Lee

et al. 2019

Materials

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The aim of this study was to evaluate the bone regeneration effect of recombinant human bone morphogenetic protein-2 (rhBMP-2) on a subperiosteal bone graft in a rat model. A subperiosteal space was made on the rat calvarium, and anorganic bovine bone (ABB), ABB/low bone morphogenetic protein (BMP) (5 µg), and ABB/high BMP (50 µg) were grafted as subperiosteal bone grafts. The new bone formation parameters of bone volume (BV), bone mineral density (BMD), trabecular thickness (TbTh), and trabecular spacing (TbSp) were evaluated by microcomputed tomography (µ-CT), and a histomorphometric analysis was performed to evaluate the new bone formation area. The expression of osteogenic markers, such as bone sialoprotein (BSP) and osteocalcin, were evaluated by immunohistochemistry (IHC). The ABB/high BMP group showed significantly higher BV than the ABB/low BMP (p = 0.004) and control groups (p = 0.000) and higher TbTh than the control group (p = 0.000). The ABB/low BMP group showed significantly higher BV, BMD, and TbTh than the control group (p = 0.002, 0.042, and 0.000, respectively). The histomorphometry showed significantly higher bone formation in the ABB/low and high BMP groups than in the control group (p = 0.000). IHC showed a high expression of BSP and osteocalcin in the ABB/low and high BMP groups. Subperiosteal bone grafts with ABB and rhBMP-2 have not been studied. In our study, we confirmed that rhBMP-2 contributes to new bone formation in a subperiosteal bone graft with ABB.

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The rate and stability of mandibular block bone graft in recent 5 years

Cited by 7 publications

References 22 publications

Efficacy of Collagen-Based Membranes in Alveolar Bone Augmentation

Efficacy of Collagen-Based Membranes in Alveolar Bone Augmentation

Stress Distribution on the Prosthetic Screws in the All-on-4 Concept: A Three-Dimensional Finite Element Analysis

Evaluation of the Bone Regeneration Effect of Recombinant Human Bone Morphogenic Protein-2 on Subperiosteal Bone Graft in the Rat Calvarial Model

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