扩弓后单侧完全性牙槽突裂的骨移植修复

目的:研究单侧完全性牙槽突裂畸形患者扩弓后骨移植修复的效果,为唇腭裂序列治疗后期正畸和正颌外科治疗提供临床基础。方法:对23例恒牙期单侧完全性唇腭裂术后伴发牙弓狭窄的牙槽突裂畸形患者进行快速扩弓并保持半年后,采用自体髂骨松质骨颗粒移植修复进行研究,对术后随访的X线片进行效果评价。结果:临床应用该方法治疗23例牙槽突裂患者,术后随诊3个月以上,临床观察牙槽突裂已修复,X线片显示骨密度接近正常骨质,移植骨块清晰可见,有较好的术后愈合效果。结论:正畸扩弓技术牙槽突裂骨移植修复术是唇腭裂序列治疗的重要组成部分,对于矫治伴有牙槽突裂的上牙弓缩窄畸形的唇腭裂患者,应在植骨手术前行扩弓治疗。     

Spontaneous tooth eruption after alveolar cleft osteoplasty using tissue-engineered bone: a case report.

To bridge the cleft in the alveolar bone and to allow for physiologic eruption of the canine teeth, alveolar bone grafting is often necessary in patients with cleft lips and palates. Instead of autogenous bone, biomaterial seeded with autogenous osteogenic cells has found some clinical application. However, so far no real functional proof has been available to demonstrate that this technique also allows further physiologic features such as tooth eruption to occur. This report describes the results of grafting tissue-engineered bone into the alveolar cleft of a 10-year-old boy. Immediate postoperative healing was uneventful. Eight months after grafting, erupting teeth had moved into the newly formed bone. Eighteen months postoperatively at the site where the tissue-engineered graft had been inserted, the canine had erupted spontaneously in its proper place. The data suggest that tissue-engineered bone can lead to the ossification of the alveolar cleft and allow for physiologic spontaneous tooth eruption.     

Maxillary bone transportation in alveolar cleft-transport distraction osteogenesis for treatment of alveolar cleft repair.

Secondary autogenous cancellous bone grafting is a widely used method for the treatment of alveolar clefts and oronasal fistulae. However, failure of iliac bone grafting sometimes occurs due to inadequate covering with the surrounding soft tissue and marked scar formation, inappropriate patient age, or large clefts. For alveolar clefts, we developed a method consisting of alveolar bone transportation, closure of the alveolar cleft, and/or grafting of new bone. Transport distraction osteogenesis along the curve of the dental arch is ideal. Alveolar bone was transported in the planned direction using a ready-made bone-borne distractor in combination with an orthodontic arch wire for transport guidance. This method allows simultaneous correction of nasal septal deviation and also correction of maxillary arch deformities and malocclusion since, the dental arch is expanded without donor sacrifice. This method can be regarded as tissue engineering to expand bone tissue. This method can be safely performed not only in patients undergoing initial treatment for alveolar clefts but also in patients in whom bone grafting has failed. Since 1997, we have performed this method in 22 patients and obtained good results.     

Secondary bone grafting and orthodontic treatment in patients with bilateral complete clefts of the lip and palate

The results of secondary bone grafting and orthodontic treatment in 41 patients with bilateral complete clefts of the lip and palate are reported. Good bone formation was found in 98% of the cleft sites grafted before the eruption of the canines, and in 80% of the clefts grafted later. Closure of both cleft spaces by orthodontic means was achieved in 20 of the 21 patients in the first group, and in 14 of the 20 patients in the second group. The bone grafts failed in one cleft site in 4 patients, all of which were regrafted with satisfactory results. In 2 patients one of the canines was later affected by external root resorption, necessitating endodontic treatment. Both the failures and the root resorptions occurred in patients bone grafted at an older age than was considered optimal for bilateral clefts: 10 to 11 years. Seven patients needed a bridge prosthesis, 3 of these over one cleft space only. Even these patients benefited greatly from bone grafting.     

Long-term influence of infant periosteoplasty on facial growth and occlusion in patients with bilateral cleft lip and palate

Abstract This retrospective, long-term study evaluated the influence of two different treatment protocols, one including infant periosteoplasty, on facial growth and occlusion in patients with complete bilateral cleft lip and palate (BCLP). Thirty-five patients with records of 5-, 8- and 16-19-year-olds were included. Sixteen of these received infant periosteoplasty (BCLP-pp) to the cleft alveolus in conjunction with lip repair and a one-stage closure of the palate. The remaining 19 patients with a two-stage closure of the palate did not have an infant periosteoplasty (BCLP-np). The bone formation induced by periosteoplasty in the BCLP-np group was insufficient and both groups had secondary bone grafting to the alveolar clefts before the eruption of the lateral incisor or the canine. Facial growth was evaluated with cephalometry at the recorded ages and dental arch relationships with the Huddart and Bodenham crossbite scores at the age of 16-19 years. Until 19 years a significant retrusion of the maxillary position (SNA) was observed in both groups. At 16-19 years of age there was no significant difference of maxillary protrusion (SNA), intermaxillary position (ANB), maxillary length (ss-pm) or vertical skeletal relationships (ML/NSL, Ml/NL) between the two groups. However, a significant difference of the crossbite scores was found. The BCLP-pp group did not show more facial growth problems but more malocclusion and the insufficient bone formation of the alveolar clefts after infant periosteoplasty required a secondary bone grafting.     

Assessment of secondary alveolar bone grafting using a modification of the Bergland grading system.

Although the management of the alveolar cleft remains controversial secondary alveolar bone grafting is the most widely accepted approach. The results of a series of 71 secondary alveolar bone grafts performed between 1990 and 2001 on 58 patients with complete cleft lip and palate 13 of which were bilateral are presented. Bone grafts were assessed when the canine tooth had fully erupted using periapical dental radiographs.The occlusal level of the newly obtained interdental bone of each grafted cleft was recorded and categorised in accordance with the Oslo grading system as described by Bergland. In addition the basal level of each bone graft was recorded. In this way total bone graft height was measured and each graft was categorised with respect to the desired normal height of noncleft interdental alveolar bone. This modified analysis grades more precisely the efficacy of secondary alveolar bone grafting and helps to identify and categorise those patients with insufficient bone for dental, orthodontic and orthognathic rehabilitation and those who may require further investigation and regrafting.     

Long-term influence of infant periosteoplasty on facial growth and occlusion in patients with bilateral cleft lip and palate

Abstract

This retrospective, long-term study evaluated the influence of two different treatment protocols, one including infant periosteoplasty, on facial growth and occlusion in patients with complete bilateral cleft lip and palate (BCLP). Thirty-five patients with records of 5-, 8- and 16–19-year-olds were included. Sixteen of these received infant periosteoplasty (BCLP-pp) to the cleft alveolus in conjunction with lip repair and a one-stage closure of the palate. The remaining 19 patients with a two-stage closure of the palate did not have an infant periosteoplasty (BCLP-np). The bone formation induced by periosteoplasty in the BCLP-np group was insufficient and both groups had secondary bone grafting to the alveolar clefts before the eruption of the lateral incisor or the canine. Facial growth was evaluated with cephalometry at the recorded ages and dental arch relationships with the Huddart and Bodenham crossbite scores at the age of 16–19 years. Until 19 years a significant retrusion of the maxillary position (SNA) was observed in both groups. At 16–19 years of age there was no significant difference of maxillary protrusion (SNA), intermaxillary position (ANB), maxillary length (ss-pm) or vertical skeletal relationships (ML/NSL, Ml/NL) between the two groups. However, a significant difference of the crossbite scores was found. The BCLP-pp group did not show more facial growth problems but more malocclusion and the insufficient bone formation of the alveolar clefts after infant periosteoplasty required a secondary bone grafting.     

The use of free-periosteum for secondary bone grafting to the maxillary alveolar clefts

Some modification on the surgical technique for bone grafting to the alveolar clefts has been required. Secondary bone grafting was performed with and without free-periosteum on 34 (mean age, 9.8 +/- 1.1 years) and 44 (mean age, 10.7 +/- 1.2 years) alveolar clefts, respectively. Vertical bone formation which scored 3 or 4 was obtained in 97.1% of free-periosteum grafted clefts, while it was obtained in 79.5% of the control group. The rate of postoperative wound dehiscence in free-periosteum grafted clefts (20.6%) was not significantly different from the control group (11.4%). In the wound dehiscence cases, however, the grafted periosteum covered the grafted bone and prevented bone exposure. The score of bone formation in the free-periosteum grafted clefts (3.57 +/- 0.79) was significantly higher than that of the control group (2.60 +/- 1.34). Thus, free-periosteum grafting in secondary bone grafting is useful for bone formation in alveolar clefts.     

唇侧近中倾斜阻生上尖牙的导萌技巧

目的探讨唇侧近中倾斜阻生上尖牙的导萌技巧。方法收集上尖牙唇侧近中倾斜阻生的患者38例。以上颌第1磨牙带环颊侧的钩作为施力点，牵引阻生的尖牙首先向远中倾斜移动并直立，待避开对侧切牙的压迫后，再向牙弓内移动。结果38例矫治效果良好。平均治疗时间18个月。5例拔除埋伏较深的阻生尖牙，关闭牙弓间隙；4例拔除根吸收的侧切牙，19例拔除前磨牙，其余10例未拔牙，均牵引尖牙至牙弓内。矫治过程未加重邻牙牙根吸收。结论上尖牙唇侧近中倾斜阻生时，将上颌第1磨牙带环颊侧钩作为牵引点，应用弹力线牵拉尖牙向远中移动并直立后，再向牙弓内牵引，可以顺利地矫治阻生牙及保护邻牙。     

Maxillary Dental Arch and Occlusion in Patients with Repaired Clefts of the Secondary Palate

Abstract

Maxillary morphology and dental occlusion were studied from infancy to age 10 years in 32 patients born with isolated cleft palate. Wardill-Kilner push back repair of the palate had been done at a mean age of 7.5 months. Measurements obtained from casts of the jaws showed that the average maxillary dimensions before as well as after operation were less than those reported for children without clefts. The mean reduction was similar whether the cleft reached into the hard palate or affected the soft palate only. Preoperative anterior maxillary arch width in particular, and also distance from scar line to selected teeth seemed to influence postoperative development of the maxillary dental arch in individual patients.     

Bone grafting at the stage of mixed dentition in cleft lip and palate patients

Our results of bone grafting to the alveolar process during the mixed dentition were investigated in 55 consecutively treated patients (66 clefts). The amount of remaining bone and gingival retraction at the tooth mesial to the cleft after 3 and 12 months was measured and correlated with the following anatomical conditions present during surgery: width of the cleft, rotation of the adjacent incisor, stage of eruption of the tooth distal to the cleft. It was also considered if any deciduous lateral incisor or canine was extracted during surgery and if any flap dehiscence took place postoperatively. It was found that flap dehiscence resulted in significantly less bone at 3 months and at 1 year after surgery. Furthermore, extraction of a deciduous tooth was found to be significantly correlated to less bone 1 year after surgery, in which cases there were also persisting gingival retractions. The other factors had no significant influence on the outcome of surgery.     

单侧完全性唇腭裂患者自体骨移植修复牙槽突裂后早期牙移入的CT评价

目的 应用螺旋CT评价早期移动裂隙两侧的牙齿给予植骨区适当的功能刺激能否减少牙槽突裂植骨术后植入骨的吸收,增加新骨的形成,从而提高植骨手术成功率及植骨效果.方法 牙槽突裂患者12例,年龄9～13岁,分为两组：正畸牙移动组（A组）,在牙槽突裂植骨术后早期进行正畸牙移动;对照组（B组）只是行自体骨牙槽突裂植骨术.在植骨前后和正畸治疗后进行三维CT扫描,并对获得数据进行重建分析,观察正畸牙移入植骨区域后,正畸牙位置及牙槽骨的形态及体积变化.结果 两组在术前裂隙宽度及牙槽突裂体积均未见明显差异.术后6个月A组的新骨成骨体积为（0.98±0.23） mm3,显著大于B组的（0.73±0.15） mm3.新骨形成率在A组为（72.5±11.9）％,显著大于B组的（53.2±9.7）％.牙槽突裂患者自体骨植骨术后,早期正畸牙移动可顺利使裂隙侧牙齿移入植骨区域,正畸牙的牙根尖位置发生明显的位移,CT断面未见明显牙根吸收.结论 早期正畸牙移动可明显减少牙槽突裂植骨术后植入骨的吸收,其对植入骨的改建有明显的积极作用.     

齿槽裂修复方法的研究进展

目的探讨齿槽裂修复治疗的目的、方法以及治疗时机的选择。方法查阅1950年至2006年有关齿槽裂修复的文献,归纳文献中报道的不同方法,并评价其各自的优缺点。结果齿槽裂修复的主要目的:关闭口鼻瘘;建立稳定、连续的上颌骨牙弓;为牙齿萌出提供基础;为上唇和鼻底提供稳定支架。主要治疗方法:植骨术;牵引成骨技术;组织工程骨和生长因子应用;引导骨再生技术。患者最佳的手术治疗时机是9~11岁时混合牙列期。结论在9~11岁混合牙列期手术,以髂骨松质骨为移植材料被认为是修复齿槽裂的主要手段。牵引成骨技术、组织工程技术和引导骨再生技术,将是齿槽裂修复的新方向。     

TIBIA AS DONOR SITE FOR ALVEOLAR BONE GRAFTING IN PATIENTS WITH CLEFT LIP AND PALATE: LONG TERM EXPERIENCE

Tibial bone grafts were studied in 137 patients with clefts of the lip and palate. Twenty-one had clefts of the lip and primary palate and 116 had complete unilateral clefts of the lip and palate. Bone grafting was performed secondarily or late secondarily. Bone was harvested from the proximal part of the tibia distal to the tuberosity through an incision about 15 mm long. The mean follow-up time after bone grafting was 5.5 years (range 2-11). There were no operative, or early or late postoperative complications reported (such as haematoma, fracture, or shortening of the limb). Harvesting time was about 15 minutes. The possibility of operating with two teams makes the total operating time shorter. Bleeding was negligible (less than 15 ml) and the amount of bone obtained was always sufficient. Patients were mobilised the next day and were back to full physical activity by one month. Indications for tibial bone grafting included facilitation of tooth eruption into the graft, giving bony support to the neighbouring teeth, making it possible to insert a titanium fixture, raising the alar base of the nose, and closing an oronasal fistula. Compared with iliac, cranial, mandibular, and costal donor sites, using the tibia took less time, gave less bleeding, made it possible for two teams to operate simultaneously, gave a smaller scar, and there were minimal complications and satisfactory quantity and quality of bone in all cases. The results suggested that the tibia is an excellent choice of graft for residual alveolar clefts in patients with cleft lip and palate.     

Tibia as donor site for alveolar bone grafting in patients with cleft lip and palate: long-term experience.

Tibial bone grafts were studied in 137 patients with clefts of the lip and palate. Twenty-one had clefts of the lip and primary palate and 116 had complete unilateral clefts of the lip and palate. Bone grafting was performed secondarily or late secondarily. Bone was harvested from the proximal part of the tibia distal to the tuberosity through an incision about 15 mm long. The mean follow-up time after bone grafting was 5.5 years (range 2-11). There were no operative, or early or late postoperative complications reported (such as haematoma, fracture, or shortening of the limb). Harvesting time was about 15 minutes. The possibility of operating with two teams makes the total operating time shorter. Bleeding was negligible (less than 15 ml) and the amount of bone obtained was always sufficient. Patients were mobilised the next day and were back to full physical activity by one month. Indications for tibial bone grafting included facilitation of tooth eruption into the graft, giving bony support to the neighbouring teeth, making it possible to insert a titanium fixture, raising the alar base of the nose, and closing an oronasal fistula. Compared with iliac, cranial, mandibular, and costal donor sites, using the tibia took less time, gave less bleeding, made it possible for two teams to operate simultaneously, gave a smaller scar, and there were minimal complications and satisfactory quantity and quality of bone in all cases. The results suggested that the tibia is an excellent choice of graft for residual alveolar clefts in patients with cleft lip and palate.     

Computed tomography of alveolar bone grafts 20 years after repair of unilateral cleft lip and palate.

The aim of this study was to estimate the clinical condition and amount of remaining grafted bone 20 years after final repair of unilateral cleft lip and palate. Eighteen consecutive patients had computed tomograms (CT) and clinical examination 20 years or more after secondary bone grafting which had been done at ages of 7-11 years. The images were obtained with a spiral CT with 1 mm collimation, and reconstructed as three-dimensional volumes with reformatted cut planes. The area of grafted bone was measured in a plane perpendicular to the curved axis of the alveolar arch and compared with the area corresponding section through the non-cleft side. The clinical examination showed satisfactory results in all. CT indicated a mean cross sectional area of 97 mm2 on the cleft side compared with 157 mm2 on the non-cleft side. The bone mass was significantly less on the grafted cleft side (p < 0.001), but the functional results were satisfactory.     

The percutaneous trephine technique for harvesting iliac crest bone graft in alveolar clefts and its effect on donor site morbidity and quality of bone graft

The percutaneous trephine technique uses a bone marrow biopsy needle to harvest cancellous bone graft from the anterior iliac crest. The subjects of this study were 41 patients with 47 alveolar clefts who underwent secondary bone grafting over a period of 5 years, using the above technique. The donor site morbidity was evaluated retrospectively by means of a postal questionnaire and case note survey. Patients were questioned about severity of pain, duration of pain and duration of limping. None of the patients had donor site pain or limping for more than 2 weeks. No patient had severe donor site pain. Case note surveys revealed no donor site complications of haematoma, sensory disturbance, wound breakdown or contour abnormality. In 85.10% (n=40) of the alveolar clefts where the canine tooth had reached its final position at the bone grafted site, dental radiographs were used to assess the interalveolar septal height. In 82.5% (n=33) the interalveolar septal height was more than three quarters of normal i.e. a successful result. In conclusion the percutaneous technique causes minimal donor site pain and gait disturbance. It is a simple and safe technique, easy to learn and quick to perform leaving the patient with an imperceptible donor site scar. The results of clinical and radiological assessment of the quality of the bone graft also compare favourably with the conventional open technique of harvesting iliac crest graft in cases of alveolar clefts. Received: 31 December 1997 / Accepted: 20 July 1998     

A Follow-Up Study of Cleft Children Treated with Primary Bone Grafting: I. Orthodontic Aspects

The effect of primary bone grafting in the treatment of complete clefts has been studied with roentgenologic and biometric methods. The material, operated on during 1958–64, consisted of 16 patients with complete bilateral cleft lip and palate and 37 cases with complete unilateral cleft lip and palate. All of the studied bone grafts (= 69) healed well, but this did not lead to the expected normalisation of the growth of the middle face. On the contrary, our patients developed a pronounced maxillary retrognathia, which seemed to increase with age. This resulted in a concave facial skeletal profile for both the bilateral and unilateral cases. The occlusal analysis also indicated a maxillary growth retardation. Thus, our patients revealed a much higher frequency of anterior as well as lateral crossbites, when compared with other studies on not-bone-grafted clefts. Also, our patients had increased frequency of Class III molar relations while fewer had Class I and Class II relations. The growth aberration in many cases reached such a degree that the primary bone grafting of further cleft patients was discontinued.     

Early bone grafting in complete cleft lip and palate cases following maxillofacial orthopedics. IV. A radiographic study of the incorporation of the bone grafts

The development of bone grafts in complete alveolar clefts was studied with standard radiographic methods. The patients were divided into three groups: one unilateral group of 39 children operated on between 1960-1965 without preoperative orthopedics, another unilateral group of 46 children operated on between 1965-1972 after preoperative orthopedics ("T-traction") and one group of bilateral clefts with 19 children operated on 1960-1972 after premaxillary retropositioning pressure if necessary combined with outward rotation of the lateral segments. All children had bone grafts inserted with "a four-flap" technique. The results were compared with those operated on with early bone grafting by a different method. The results were similar with good healing and incorporation of the transplanted bone. The group bone grafted after preoperative "T-traction", which facilitates the surgical procedure, showed the highest alveolar bone level. The amount of bone seemed to increase with increasing age of the patient and migration of teeth into the grafted region.     

Reconstruction of Previously Failed Alveolar Bone Grafts with Medial Femoral Condyle Flap in Pediatric Cleft Lip and Palate Patients

Alveolar cleft reconstruction is important to increase the quality of life of cleft lip and palate patients. Usually, alveolar clefts can be reconstructed using bone grafts. However, bone grafting can be insufficient, and other alternatives may be necessary in wide and recalcitrant clefts. The medial femoral condyle (MFC) flap may be the solution for alveolar clefts that are impossible to reconstruct with bone grafting. In this study, the reconstruction of alveolar clefts in the pediatric cleft lip and palate population, using the MFC flap, is described.This study examined 9 pediatric patients whose alveolar clefts were reconstructed prospectively using MFC flap in 2015 and 2019. The age, gender, follow-up times, independent parameters, and existence of concomitant vestibulonasal fistulas of the patients were recorded. Computerized tomography images of the patients were evaluated to detect defect characteristics and evaluate the volume of flap postoperatively. Flap viability was confirmed with bone scintigraphy, and donor area morbidity was evaluated with the Dynamic Gait Index (DGI) in the postoperative period.The study included 7 male and 2 female patients. The mean age of the patients was 13. In addition to an alveolar cleft, 6 patients also had vestibulonasal fistula. It was observed that the volume of the flaps had not changed one year after the operation. The DGI score of all the patients was 24.Existing techniques may be inadequate in the reconstruction of wide and recalcitrant alveolar clefts. MFC flap may be the start of a new era for the treatment of alveolar clefts.