Maxillary Stability Following Le Fort I Osteotomy in Combination With Sagittal Split Ramus Osteotomy and Intraoral Vertical Ramus Osteotomy: A Comparative Study Between Titanium Miniplate and Poly-l-Lactic Acid Plate

Ueki, Koichiro; Marukawa, Kohei; Shimada, Masumi; Nakagawa, Kiyomasa; Alam, Shamiul; Yamamoto, Etsuhide

doi:10.1016/j.joms.2005.09.015

Cited by 66 publications

(59 citation statements)

References 20 publications

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“…Recently, the use of resorbable materials to stabilize the maxillofacial skeleton has been reported (Ueki et al, 2005, Ueki et al, 2006. In this study, there was no significant difference between the titanium plate, PLLA plate and uHA/PLLA plate.…”

Section: Discussionmentioning

confidence: 47%

Assessment of bone healing after Le Fort I osteotomy with 3-dimensional computed tomography

Ueki

Miyazaki

Okabe

et al. 2011

Journal of Cranio-Maxillofacial Surgery

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Key words:Bone healing, Pterygoid plate, Le Fort I osteotomy, ultrasonic bone curette, 3-demensional computed tomography (3DCT) AbstractPurpose. The purpose of this study was to examine bone healing after Le Fort I osteotomy in Class III patients.Patients and Methods. The study group consisted of 18 Japanese patients with mandibular prognathism with and without asymmetry, maxillary retrognathism or open bite. A total of 36 sides were examined. Le Fort I osteotomy was performed without a pterygoid osteotome, with an ultrasonic curette used to remove interference at the pterygomaxillary region. Titanium plates (Universal Mid-face fixation module, Stryker, Freiburg, German)were used for four patients, absorbable plates (poly-L-lactic acid (PLLA): NEOFIX®, Gunze, kyoto, Japan) were used for four patients and other absorbable plates (uncalcined and unsintered hydroxyapatite and poly-L-lactic acid (uHA/PLLA): super FIXSORB®MX, Takiron Co. Ltd, Osaka, Japan) were used for ten patients, in the same manner.Postoperative computed tomography (CT) was analyzed for all patients pre-operatively and 1 year post-operative. The anterior and lateral areas between the maxillary segments were measured with 3-dimensional (3D) CT. Bone healing at the pterygomaxillary region was also assessed.Results. There were no significant differences in the area of bone defect healing among the plate types. The areas of bone defect after 1 year were significantly smaller than that immediately after surgery on the right side (p=0.0145) and left side (p=0.0010) in the frontal view and right side in the lateral view (p=0.0118). Bone healing at the pterygo-maxillary junction was found in all cases without artificial pterygoid plate fracture.14 of 22 sides with artificial pterygoid plate fracture by an ultrasonic curette showed bone continuity between the pterygoid plate and posterior part of maxilla.Conclusion. This study suggested that bony healing could occur in spaces between the segments of maxilla and pterygomaxillary regions as well as the region of the anterior and lateral walls in the maxilla, but it is not always complete within 1 year after Le Fort I osteotomy.

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Section: Discussionmentioning

confidence: 47%

Assessment of bone healing after Le Fort I osteotomy with 3-dimensional computed tomography

Ueki

Miyazaki

Okabe

et al. 2011

Journal of Cranio-Maxillofacial Surgery

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“…In addition to the lower incidence of nerve injuries, IVRO offers other advantages over SSRO, such as a reduced operating time and less bleeding, by virtue of its technical simplicity (Bell andYamaguchi, 1991, Westemark et al, 1998). Furthermore, IVRO is a more favorable osteotomy procedure for asymmetry cases, because the bony interference is reduced compared to that associated with SSRO (Ueki et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Assessment of skeletal stability of intraoral vertical ramus osteotomy with one-day maxillary–mandibular fixation followed by early jaw exercise

Ohba

Tasaki

Tobita

et al. 2013

Journal of Cranio-Maxillofacial Surgery

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Purpose: Intraoral vertical ramus osteotomy (IVRO) is an effective surgical technique for cases of mandibular setback, and is simpler and has a lower incidence of mentalis paresthesia compared to sagittal split ramus osteotomy (SSRO), another well-known orthognathic surgical technique for the mandible. However, IVRO has a disadvantage in the prolonged duration of postoperative maxilla-mandibular fixation (MMF) required due to the absence of rigid bone fixation. To avoid an extended MMF period, we developed a postoperative management protocol for our IVRO patients, which includes jaw exercises with elastic bands starting on the second day after surgery.Methods: We evaluated the cephalometric skeletal and dental stabilities of 16 IVRO patients as they followed our protocol.Results: The stabilities were confirmed and were similar to those of previous reports.Conclusion: One-day MMF and early initiation of jaw exercise after IVRO did not affect the jaw position stability. Moreover, our findings suggest that starting jaw exercise earlier after IVRO surgery is beneficial, as it allows patients to avoid a long period of rigid MMF so that they can resume their normal daily activities sooner.

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“…However, a significant difference in the A point in the lateral cephalometric measurements was found between the two groups. 1 This suggested that the difference between titanium and the absorbable plate could affect the stability following Le Fort I osteotomy.…”

Section: Discussionmentioning

confidence: 99%

“…1,2 The biodegradable devices have major advantages over conventional metallic implants. There is no need for a second operation to remove the implant.…”

Section: Introductionmentioning

confidence: 99%

“…17,18 Use of a plate and screw system only was enough to fix the segments and maintain the stability, according to previous reports. 1,2 However, the absorbable plate system was used in cases where the space between the bony segments was wide, and whether proper rigidity and stability can be achieved was also considered. Therefore, the combined use of segmental fixation with absorbable plate system and filling in the space between the segments were assumed to be clinically necessary.…”

Section: Introductionmentioning

confidence: 99%

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An experimental study of use of absorbable plate in combination with self-setting α-tricalcium phosphate for orthognathic surgery

Okabe

Ueki

Marukawa

et al. 2010

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, an

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An experimental study of use of absorbable plate in combination with self-setting α-tricalcium phosphate for orthognathic surgery Abstract Purpose: The purpose of this study was to histologically and immuno-histochemically evaluate bone formation using both of self-setting α-tricalcium phosphate (α-TCP; BIOPEX ® ) and absorbable plate (Super FIXSORB ® -MX) in rabbit cranium bone.Study design: Adult male Japanese white rabbits (n=16, 12-16 weeks, 2.5-3.0 kg) were used. The surgical defects were made in the nasal bone of a rabbit and BIOPEX ® was implanted in the left side and no material in the right side. Two-hall-absorbable plate and two screws (Super FIXSORB ® -MX) were fixed across the defect in each side. The rabbits were sacrificed at1, 4, 12 and 24 weeks postoperatively, and formalin-fixed specimens were embedded in acrylic resin. The specimens were stained with hematoxylin and eosin. For immune-histochemical analysis, the specimens were treated with bone morphogenetic protein-2 (BMP-2) antibodies. Finally, these were evaluated microscopically.Results: New bone formation was observed in the region of absorbable plate and nasal membrane after more than 4 weeks. The area of BIOPEX ® ＋new bone was significantly 3 larger than that of control side after 1, 4 and 12 weeks (P<0.05). The number of BMP-2 stained cell in experimental side was significantly larger than that in control side after 4 and 12 weeks (P<0.05). Conclusion

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Maxillary Stability Following Le Fort I Osteotomy in Combination With Sagittal Split Ramus Osteotomy and Intraoral Vertical Ramus Osteotomy: A Comparative Study Between Titanium Miniplate and Poly-l-Lactic Acid Plate

Cited by 66 publications

References 20 publications

Assessment of bone healing after Le Fort I osteotomy with 3-dimensional computed tomography

Assessment of bone healing after Le Fort I osteotomy with 3-dimensional computed tomography

Assessment of skeletal stability of intraoral vertical ramus osteotomy with one-day maxillary–mandibular fixation followed by early jaw exercise

An experimental study of use of absorbable plate in combination with self-setting α-tricalcium phosphate for orthognathic surgery

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