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Tao B, Xu J, Gao J, He S, Jiang S, Wang F, Chen X, Wu Y. Deep learning-based automatic segmentation of bone graft material after maxillary sinus augmentation. Clin Oral Implants Res 2024; 35:964-972. [PMID: 38033189 DOI: 10.1111/clr.14221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 11/14/2023] [Accepted: 11/15/2023] [Indexed: 12/02/2023]
Abstract
OBJECTIVES To investigate the accuracy and reliability of deep learning in automatic graft material segmentation after maxillary sinus augmentation (SA) from cone-beam computed tomography (CBCT) images. MATERIALS AND METHODS One hundred paired CBCT scans (a preoperative scan and a postoperative scan) were collected and randomly allocated to training (n = 82) and testing (n = 18) subsets. The ground truths of graft materials were labeled by three observers together (two experienced surgeons and a computer engineer). A deep learning model including a 3D V-Net and a 3D Attention V-Net was developed. The overall performance of the model was assessed through the testing data set. The comparative accuracy and inference time consumption of the model-driven and manual segmentation (by two surgeons with 3 years of experience in dental implant surgery) were conducted on 10 CBCT scans from the test samples. RESULTS The deep learning model had a Dice coefficient (Dice) of 90.36 ± 2.53%, a 95% Hausdorff distance (HD) of 1.59 ± 0.82 mm, and an average surface distance (ASD) of 0.38 ± 0.11 mm. The proposed model only needed 7.2 s, while the surgeon took 19.15 min on average to complete a segmentation task. The overall performances of the model were significantly superior to those of surgeons. CONCLUSIONS The proposed deep learning model yielded a more accurate and efficient performance of automatic segmentation of graft material after SA than that of the two surgeons. The proposed model could facilitate a powerful system for volumetric change evaluation, dental implant planning, and digital dentistry.
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Affiliation(s)
- Baoxin Tao
- Department of Second Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Jiangchang Xu
- Institute of Biomedical Manufacturing and Life Quality Engineering, State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Gao
- Department of Second Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Shamin He
- Department of Second Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Shuanglin Jiang
- Institute of Biomedical Manufacturing and Life Quality Engineering, State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Feng Wang
- Department of Second Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
| | - Xiaojun Chen
- Institute of Biomedical Manufacturing and Life Quality Engineering, State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Yiqun Wu
- Department of Second Dental Center, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- College of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- National Center for Stomatology, Shanghai, China
- National Clinical Research Center for Oral Diseases, Shanghai, China
- Shanghai Key Laboratory of Stomatology, Shanghai, China
- Shanghai Research Institute of Stomatology, Shanghai, China
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Xiao P, Chen C, Shen X, Xu A, Sharaf MA, Lu H, He F. Bone volume and height changes for lateral window sinus floor elevation using two types of deproteinized bovine bone mineral: A retrospective cohort study of 1-4 years. Clin Oral Implants Res 2024. [PMID: 39041851 DOI: 10.1111/clr.14337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 06/10/2024] [Accepted: 07/10/2024] [Indexed: 07/24/2024]
Abstract
OBJECTIVE To compare bone volume and height changes of two types of deproteinized bovine bone mineral (DBBM) for lateral window sinus floor elevation (LSFE) with simultaneous implant placement. MATERIALS AND METHODS This retrospective cohort study involved 72 patients who underwent LSFE using low-temperature sintered cancellous bone-derived DBBM (C-DBBM) or high-temperature two-step sintered epiphyseal-derived DBBM (E-DBBM). Cone-beam computed tomography (CBCT) was acquired preoperatively, immediately postoperatively, 6 months and 1-4 years post-surgery. Bone volume (BV), apical bone height (ABH), endo-sinus bone gain (ESBG), and crestal bone level (CBL) were evaluated through three-dimensional fitting and superimposition. Linear mixed models (LMM) were employed to analyze factors influencing the reduction of BV (ΔBV) and ESBG (ΔESBG). RESULTS The E-DBBM group showed no significant change in BV 1-4 years post-surgery, while the C-DBBM group demonstrated a significant reduction (p = .006) with volume stability of 85.86%. Bone height in the E-DBBM group increased at 6 months and subsequently decreased at 1-4 years (p = .003). In the C-DBBM group, it decreased at 6 months (p = .014), then further decreased at 1-4 years (p = .001). ΔESBG was lower in the E-DBBM group than the C-DBBM group from immediate postoperative to 1-4 years (p = .009). LMM showed graft material type was the primary factor influencing ΔBV (p = .026) and ΔESBG (p = .003). CONCLUSIONS Within the limitations of this study, both types of DBBM could achieve favorable clinical outcomes. E-DBBM demonstrated enhanced stability in maintaining bone volume and height.
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Affiliation(s)
- Pei Xiao
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Cong Chen
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Xiaoting Shen
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Antian Xu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Mufeed Ahmed Sharaf
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Hongye Lu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
| | - Fuming He
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Clinical Research Center for Oral Disease of Zhejiang Province, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Cancer Center of Zhejiang University, Hangzhou, China
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Rossana I, Chiara C, Marco N, Niccolò B, Filippo G, Antonio B. Maxillary sinus augmentation via the bone lid technique: A prospective, radiographic case series. Clin Adv Periodontics 2024. [PMID: 38646843 DOI: 10.1002/cap.10288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 04/23/2024]
Abstract
BACKGROUND Maxillary sinus augmentation is one of the most performed procedures to increase the bone quantity of the atrophic maxilla to allow implant placement. The aim of the present case series was to describe a surgical protocol to perform maxillary sinus augmentation with the "bone lid technique," and its outcomes in a cohort of patients eligible for the procedure. METHODS After the initial clinical evaluation, a cone-beam computed tomography (CBCT) examination was performed for preoperative assessment. Patients were then scheduled for surgical intervention. At 6-9 months follow-up, patients underwent a second CBCT scan to evaluate bone height following bone graft and to schedule implant placement. RESULTS A total of 11 patients were enrolled in the study with a total of 13 sinus lift procedures. Membrane perforation was registered in 4 cases (30.76%). Mean surgical time was 67.69 min (SD 6.51). Postoperative period was uneventful in all patients, in the absence of complications. The mean graft volume increase was 2.46 cm3 (SD 0.85), and the mean height increase was 14.27 mm (SD 3.18). Mean membrane thickness was 1.40 mm (SD 0.75). In all the 4 cases with sinus membrane perforation, the membrane had a thickness lower than 1 mm. CONCLUSIONS The present study highlights that the maxillary sinus augmentation with bone lid repositioning could provide repeatable results in terms of bone height increase. The technique appears reliable both in terms of bone gain and absence of complications. KEY POINTS The bone lid technique for maxillary sinus augmentation provides repeatable results in terms of bone height increase. The favorable clinical outcomes can be related to an enhancement of bone formation due to the unique osteoconductive and osteoinductive properties of autogenous bone, along with a reduction of soft tissue ingrowth. Complications were not observed in any of the patients following the surgical procedures. The risk of Schneiderian membrane perforation is inversely proportional to membrane thickness; the thinner the membrane is, the higher the risk to perforate it.
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Affiliation(s)
- Izzetti Rossana
- Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, University Hospital of Pisa, Pisa, Italy
| | - Cinquini Chiara
- Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, University Hospital of Pisa, Pisa, Italy
| | - Nisi Marco
- Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, University Hospital of Pisa, Pisa, Italy
| | - Baldi Niccolò
- Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, University Hospital of Pisa, Pisa, Italy
| | - Graziani Filippo
- Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, University Hospital of Pisa, Pisa, Italy
| | - Barone Antonio
- Department of Surgical, Medical, Molecular and Critical Area Pathology, University of Pisa, University Hospital of Pisa, Pisa, Italy
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Nagata K, Kamata M, Okuhama Y, Wakamori K, Okubo M, Tsuruoka H, Atsumi M, Kawana H. Volume change after maxillary sinus floor elevation with apatite carbonate and octacalcium phosphate. Int J Implant Dent 2024; 10:7. [PMID: 38329586 PMCID: PMC10853090 DOI: 10.1186/s40729-023-00518-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 12/19/2023] [Indexed: 02/09/2024] Open
Abstract
PURPOSE Maxillary molars have low alveolar bone height diameter due to the presence of the maxillary sinus; thus, a sinus lift may be required in some cases. Changes in the volume of bone substitutes can affect the success of implant therapy. Therefore, this study aimed to compare the changes in the volume of two different bone substitutes-one based on carbonate apatite and the other on octacalcium phosphate-used in maxillary sinus floor elevation. METHODS Nineteen patients and 20 sites requiring maxillary sinus floor elevation were included in the study. Digital Imaging and Communications in Medicine data for each patient obtained preoperatively and immediately and 6 months postoperatively were used to measure the volume of the bone grafting material using a three-dimensional image analysis software. The immediate postoperative volume of octacalcium phosphate was 95.3775 mm3 per piece of grafting material used. It was multiplied by the number of pieces used and converted to mL to determine the immediate postoperative volume. RESULTS The mean resorption values of carbonate apatite and octacalcium phosphate were 12.7 ± 3.6% and 17.3 ± 3.9%, respectively. A significant difference in the amount of resorption of the two bone replacement materials was observed (P = 0.04). CONCLUSIONS The results of this study indicate that both bone substitute materials tend to resorb. The two bone grafting materials that are currently medically approved in Japan have not been in the market for a long time, and their long-term prognosis has not yet been reported. Further clinical data are warranted.
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Affiliation(s)
- Koudai Nagata
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-Cho, Yokosuka, 238-8580, Japan
| | - Masanobu Kamata
- Department of Fixed Prosthodontics, Kanagawa Dental University, 82 Inaoka-Cho, Yokosuka, 238-8580, Japan
| | - Yurie Okuhama
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-Cho, Yokosuka, 238-8580, Japan
| | - Kana Wakamori
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-Cho, Yokosuka, 238-8580, Japan
| | - Manabu Okubo
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-Cho, Yokosuka, 238-8580, Japan
| | - Hayoto Tsuruoka
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-Cho, Yokosuka, 238-8580, Japan
| | - Mihoko Atsumi
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-Cho, Yokosuka, 238-8580, Japan
| | - Hiromasa Kawana
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-Cho, Yokosuka, 238-8580, Japan.
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Epistatu D, Dinca OM, Vladan C, Padurariu C, Damian I, Hostiuc S. Radiological Study on the Evolution of the Biomaterial's Image (Shape, Density, Vertical Dimensions) after the Lateral Sinus Lift. Dent J (Basel) 2023; 11:273. [PMID: 38132411 PMCID: PMC10742771 DOI: 10.3390/dj11120273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/13/2023] [Accepted: 11/24/2023] [Indexed: 12/23/2023] Open
Abstract
The aim of this study is to evaluate the long-term changes of sinus lift material. Materials and methods: We included a total number of 35 patients (20 men and 15 women), between 32 and 80 years old, evaluated on a timeframe of up to 11.6 years. Diverse biomaterials were used (allograft, xenograft, alloplastic, combinations of them), with autologous bone in some cases. Results: The appearance of the top plane of the bone over time took a large dome shape (36% of cases), a linear shape (32% of cases), an irregular shape (23% of cases), or had micro domes above the implants (7%). No significant differences were found between the groups regarding age. The radiological density of the biomaterial tended to equalize that of the native bone. The final vertical dimensions seemed to be independent of the initial native bone height but seemed to be correlated with the amount of applied biomaterial. For the study group, the biomaterial contracted on average by 10% for the maximum height (H max) and 20% for the minimum height (H min), which can explain the tendency of the upper border of the biomaterial to curve. The annual H max contraction ranged from -0.09 to +0.18 with a mean value of 2.67% (SD = 0.04, CI: [0.011, 0.041]). The median value was 1.8%. The annual H min contraction ranged from -0.24 to +0.24, with a mean value of 4.33% (SD = 0.07, CI: [0.021, 0.065]). The median value was 3.59%. There were no statistically significant gender differences (Mann-Whitney U, p = 0.483, p = 0.642). The additional application of biomaterial together with the implants seemed to have a beneficial effect on the final vertical dimension of the bio-transformed material.
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Affiliation(s)
- Dragos Epistatu
- Department of Dental Radiology, Dental Medicine Faculty, “Carol Davila” University of Medicine and Pharmacy, 37 Dionisie Lupu Str., 020021 Bucharest, Romania
| | - Octavian-Marius Dinca
- Department Oral and Maxillofacial Surgery, “Dan Theodorescu Hospital”, “Carol Davila” University of Medicine and Pharmacy, 37 Dionisie Lupu Str., 020021 Bucharest, Romania; (O.-M.D.); (C.V.); (C.P.)
| | - Cristian Vladan
- Department Oral and Maxillofacial Surgery, “Dan Theodorescu Hospital”, “Carol Davila” University of Medicine and Pharmacy, 37 Dionisie Lupu Str., 020021 Bucharest, Romania; (O.-M.D.); (C.V.); (C.P.)
| | - Cristina Padurariu
- Department Oral and Maxillofacial Surgery, “Dan Theodorescu Hospital”, “Carol Davila” University of Medicine and Pharmacy, 37 Dionisie Lupu Str., 020021 Bucharest, Romania; (O.-M.D.); (C.V.); (C.P.)
| | - Iulian Damian
- Department of Oral Rehabilitation, Ovidius University, 124 Bd. Mamaia, Aleea Universitatii nr.1, 900527 Constanta, Romania;
| | - Sorin Hostiuc
- Department of Legal Medicine and Bioethics, “Carol Davila” University of Medicine and Pharmacy, 37 Dionisie Lupu Str., 020021 Bucharest, Romania;
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Wang XW, Yang HF, Wang EB, Cui XY, Zhao YJ, Jiang JH. Slim the face or not: 3D change of facial soft and hard tissues after third molars extraction: a pilot study. BMC Oral Health 2023; 23:508. [PMID: 37479973 PMCID: PMC10362706 DOI: 10.1186/s12903-023-03214-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 07/07/2023] [Indexed: 07/23/2023] Open
Abstract
BACKGROUND Whether slim the face or not after removed third molars is the concern of some orthodontic treatment candidates. The aim of this article is to explore the volume changes of facial soft and hard tissues after third molars extraction, as well as develop a reproducible clinical protocol to precisely assess facial soft tissue volume change. METHODS A non-randomized, non-blind, self-controlled pilot study was conducted. 24 adults aged 18-30 had ipsilateral third molars extracted. The body weight change was controlled within 2 kg. Structured light scans were taken under a standardized procedure pre-extraction (T0), three (T1), and six (T2) months post-extraction; CBCTs were taken at T0 and T2. The projection method was proposed to measure the soft tissue volume (STV) and the soft tissue volume change (STVC) by the Geomagic software. The hard tissue volume change (HTVC) was measured in the Dragonfly software. RESULTS The final sample size is 23, including 5 males (age 26.6 ± 2.5 years) and 18 females (age 27.3 ± 2.5 years). The HTVC was - 2.33 ± 0.46ml on the extraction side. On the extraction side, the STV decreased by 1.396 (95% CI: 0.323-2.470) ml (P < 0.05) at T1, and increased by 1.753 (95% CI: -0.01-3.507) ml (P = 0.05) at T2. T2 and T0 had no difference (P > 0.05). The inter and intra-raters ICC of the projection method was 0.959 and 0.974. There was no correlation between the STVC and HTVC (P > 0.05). CONCLUSIONS After ipsilateral wisdom teeth extraction, the volume of hard tissue on the extraction side reduces, and the volume of facial soft tissue does not change evidently. However, further research with large sample size is still needed. The STV measurement has excellent repeatability. It can be extended to other interested areas, including forehead, nose, paranasal, upper lip, lower lip and chin, which is meaningful in the field of orthodontics and orthopedics. TRIAL REGISTRATION ChiCTR, ChiCTR1800018305 (11/09/2018), http://www.chictr.org.cn/showproj.aspx?proj=28868 .
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Affiliation(s)
- Xin-Wen Wang
- Third Clinical Division, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, CN, China
| | - Hui-Fang Yang
- National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, CN, China
| | - En-Bo Wang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, Beijing, CN, China
| | - Xin-Yu Cui
- Department of Orthodontics, Peking University School and Hospital of Stomatology, #22 Zhongguancun South Avenue, Haidian District, Beijing, CN, 100081, China
| | - Yi-Jiao Zhao
- National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing, CN, China
| | - Jiu-Hui Jiang
- Department of Orthodontics, Peking University School and Hospital of Stomatology, #22 Zhongguancun South Avenue, Haidian District, Beijing, CN, 100081, China.
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Hamed HA, Shaaban AM, Melek LN. Evaluation of trephine osteotomy technique in direct sinus lifting with simultaneous implant placement. JOURNAL OF STOMATOLOGY, ORAL AND MAXILLOFACIAL SURGERY 2023; 124:101347. [PMID: 36460285 DOI: 10.1016/j.jormas.2022.11.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Revised: 11/15/2022] [Accepted: 11/28/2022] [Indexed: 12/03/2022]
Abstract
BACKGROUND Recently, in implant dentistry, trephine drills have been used instead of conventional drills to conserve the bone during osteotomy. AIM OF THE STUDY To evaluate the effectiveness of trephine osteotomy for lateral sinus lifting technique associated with sinus floor augmentation using the autogenous bone resulting from implant drilling using specialized trephine drills. MATERIALS AND METHOD 12 Patients were included and have been subjected to lateral sinus lifting using trephine osteotomy with simultaneous implant placement with delay loading. A bone graft used in sinus floor augmentation has been prepared using autogenous bone resulting from implant site preparation in addition to β-tricalcium phosphate. RESULTS After 6 months, the difference between the primary stability and implant stability was statistically significant p-value ≤ 0.05. After 6 months, the mean vertical bone height reached 11.71 ± 0.72 mm. The mean volume of the newly formed bone of the grafted area recorded after 6 months was 1126.7 ± 82.94 mm3. CONCLUSION Trephine osteotomy technique in both lateral approach of sinus lifting, and implant site preparation allows preservation of autogenous bone. Moreover, the trephine osteotomy technique in the lateral approach of sinus lifting eliminates the use of an absorbable membrane.
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Affiliation(s)
- Hala A Hamed
- Dentist at Ministry of Health, Master's Degree from Faculty of Dentistry, Alexandria, Egypt.
| | - Ahmed M Shaaban
- Professor of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria, Egypt
| | - Lydia N Melek
- Assistant Professor of Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Alexandria, Egypt
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Yeung AWK, Hung KF, Li DTS, Leung YY. The Use of CBCT in Evaluating the Health and Pathology of the Maxillary Sinus. Diagnostics (Basel) 2022; 12:diagnostics12112819. [PMID: 36428879 PMCID: PMC9689855 DOI: 10.3390/diagnostics12112819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/15/2022] [Accepted: 11/15/2022] [Indexed: 11/19/2022] Open
Abstract
The use of cone-beam computed tomography (CBCT) has been increasing in dental practice. This narrative review summarized the relevance and utilizations of CBCT to visualize anatomical structures of the maxillary sinus and common pathologies found in the maxillary sinus. The detection/visualization rate, the location and the morphometric characteristics were described. For sinus anatomy, the reviewed features included the posterior superior alveolar artery, sinus pneumatization, sinus hypoplasia, sinus septa, and primary and accessory sinus ostia. For pathology, the following items were reviewed: membrane thickening associated with periapical lesions/periodontal lesions, mucous retention cyst, and antrolith. The visualization and assessment of the maxillary sinus is very important prior to procedures that take place in close proximity with the sinus floor, such as tooth extraction, implant insertion, and sinus floor elevation. Some sinus pathologies may be associated with odontogenic lesions, such as periapical diseases and periodontal bone loss.
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Affiliation(s)
- Andy Wai Kan Yeung
- Oral and Maxillofacial Radiology, Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
| | - Kuo Feng Hung
- Oral and Maxillofacial Surgery, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
| | - Dion Tik Shun Li
- Oral and Maxillofacial Surgery, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
| | - Yiu Yan Leung
- Oral and Maxillofacial Surgery, Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
- Correspondence:
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Three-Dimensional Analysis of Bone Volume Change at Donor Sites in Mandibular Body Bone Block Grafts by a Computer-Assisted Automatic Registration Method: A Retrospective Study. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12147261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This study aimed to evaluate the bone volume change at donor sites in patients who received mandibular body bone block grafts using intensity-based automatic image registration. A retrospective study was conducted with 32 patients who received mandibular bone block grafts between 2017 and 2019 at the Pusan National University Dental Hospital. Cone-beam computed tomography (CBCT) images were obtained before surgery (T0), 1 day after surgery (T1), and 4 months after surgery (T2). Scattered artefacts were removed by manual segmentation. The T0 image was used as the reference image for registration of T1 and T2 images using intensity-based registration. A total of 32 donor sites were analyzed three-dimensionally. The volume and pixel value of the bones were measured and analyzed. The mean regenerated bone volume rate on follow-up images (T2) was 34.87% ± 17.11%. However, no statistically significant differences of regenerated bone volume were noted among the four areas of the donor site (upper anterior, upper posterior, lower anterior, and lower posterior). The mean pixel value rate of the follow-up images (T2) was 78.99% ± 16.9% compared with that of T1, which was statistically significant (p < 0.05). Intensity-based registration with histogram matching showed that newly generated bone is generally qualitatively and quantitatively poorer than the original bone, thus revealing the feasibility of pixel value to evaluate bone quality in CBCT images. Considering the bone mass recovered in this study, 4 months may not be sufficient for a second harvesting, and a longer period of follow-up is required.
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Wang Z, Zhang J, Ren L, Yang G. Repositioning of the bone window in lateral sinus floor elevation with simultaneous implant placement: A retrospective radiographic study. Clin Oral Implants Res 2022; 33:816-833. [PMID: 35713366 DOI: 10.1111/clr.13963] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 06/01/2022] [Accepted: 06/02/2022] [Indexed: 11/28/2022]
Abstract
OBJECTIVES To retrospectively evaluate whether repositioning the bone window leads to a better outcome of three-dimensional sinus augmentation in lateral sinus floor elevation (LSFE) with simultaneous implant placement. METHODS 34 patients with a total of 40 implants (14: test group, 26: control group) receiving LSFE with simultaneous implant placement were included in this retrospective research. CBCT images were taken before surgery, immediately and 6 months after surgery. The two-dimensional augmentation parameters, including apical bone height (ABH), endo-sinus bone gain (ESBG), and palatal/buccal bone height (PBH/BBH), and three-dimensional parameters, including augmentation volume (AV) and palatal/buccal augmentation volume (PAV/BAV), were measured. The lateral defect length (LDL) and lateral window length (LWL) were also measured to evaluate the lateral antrostomy recovery. RESULTS At the 6-month follow-up, the reduction rates at ABH, ESBG, and BBH of the test group (ABH: 10.41% ± 30.30%, ESBG: 2.55% ± 8.91%, BBH: 2.50% ± 8.65%) were significantly lower than those of the control group (ABH: 25.10% ± 22.02%, ESBG: 11.47% ± 9.79%, BBH: 7.10% ± 5.37%; p < .05). In addition, the test group showed better three-dimensional augmentation stability on the buccal side (BAV reduction: 15.51% ± 10.86% vs. 27.15% ± 12.61%; p < .05). Moreover, the LDL/LWL ratio of the test group was significantly lower than that of the control group (p < .05). CONCLUSION Within the limitations of this study, repositioning of the bone window in LSFE with simultaneous implant placement could contribute to endo-sinus augmentation stability on the buccal side at the 6-month follow-up. Moreover, it would also facilitate recovery of the lateral antrostomy defect.
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Affiliation(s)
- Zhikang Wang
- The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Jing Zhang
- The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Lingfei Ren
- The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, Zhejiang, China
| | - Guoli Yang
- The Affiliated Hospital of Stomatology, School of Stomatology, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China.,Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou, Zhejiang, China
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11
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Feher B, Frommlet F, Ulm C, Gruber R, Kuchler U. Preoperative buccal bone volume predicts long-term graft retention following augmentation in the esthetic zone: a retrospective case series. Clin Oral Implants Res 2022; 33:492-500. [PMID: 35194845 PMCID: PMC9314910 DOI: 10.1111/clr.13909] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 01/25/2022] [Accepted: 02/17/2022] [Indexed: 11/27/2022]
Abstract
Objectives Buccal bone augmentation in the esthetic zone is routinely used to achieve optimal clinical outcomes. Nonetheless, long‐term data are sparse, and it is unknown how baseline buccal bone volume affects the retention of the augmented volume over time. Material and methods This is a long‐term follow‐up retrospective case series. After a preoperative computed tomography scan, implants were placed in the anterior maxilla following guided bone regeneration, autogenous block grafting, or both. At the follow‐up, patients received a computed tomography scan and a clinical examination. Buccal bone volume was the primary outcome. Buccal bone thickness, peri‐implant, and esthetic parameters were secondary outcomes. Results After a median follow‐up of 6.7 years (interquartile range: 4.9–9.4), 28 implants in 19 patients (median age at augmentation: 43.3 years, interquartile range: 34.4–56.7, 53% female) were followed up. Preoperative buccal bone volume at baseline (V0) showed a moderate correlation to final buccal bone volume (Vt, rs = .43) but a strong correlation to the absolute volumetric change (ΔV = Vt–V0, rs = −.80). A linear mixed model for Vt had a large intercept of 91.39 (p < .001) and a rather small slope of .11 for V0 (p = .11). Observed differences between treatments were not statistically significant in the mixed model. V0 above 105 mm3 predicted a negative volume change (ΔV < 0) with a specificity of 100% and a sensitivity of 96%. Conclusions The results suggest higher gains in sites with lower V0 and point to a cutoff V0 above which the augmented volume is not retained long‐term.
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Affiliation(s)
- Balazs Feher
- Department of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Florian Frommlet
- Institute of Medical Statistics, Center for Medical Statistics, Informatics and Intelligent Systems, Medical University of Vienna, Vienna, Austria
| | - Christian Ulm
- Department of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
| | - Reinhard Gruber
- Department of Oral Biology, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria.,Austrian Cluster for Tissue Regeneration, Vienna, Austria.,Department of Periodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Ulrike Kuchler
- Department of Oral Surgery, University Clinic of Dentistry, Medical University of Vienna, Vienna, Austria
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12
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Wang Z, Jia Q, Jiang HB, Han J, Zou L, Niu G. The Relation between Morphology of Maxillary Sinus after Augmentation in Three Classification Methods and Residual Bone Height: A Retrospective Study. Int J Clin Pract 2022; 2022:1850012. [PMID: 36249910 PMCID: PMC9536978 DOI: 10.1155/2022/1850012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2022] [Revised: 09/13/2022] [Accepted: 09/16/2022] [Indexed: 11/18/2022] Open
Abstract
Maxillary sinus augmentation is critical to oral implantology, particularly in some cases. The morphology of the sinus floor reflects the lifting effect to a certain extent; however, there has been limited research on the morphology after sinus augmentation. The present study aims to investigate the relationship between residual bone height (RBH) and the morphology of the sinus floor and determine whether a correlation exists between the different evaluation classifications. Maxillary sinus floor augmentation procedures were performed in 56 patients and 68 teeth using the sinus crest approach (SCA). Imaging results obtained after one year of sinus augmentation were analyzed and simultaneously classified along the coronal plane, the sagittal plane, and the biplane (coronal-sagittal). The higher the RBH, the closer the result tends to be to A, A', or type 1 (more satisfactory). There was a significant correlation between the three different evaluation classifications (p < 0.05). The morphology of perforation cases was involved in types C, D, C', and D'. A more satisfactory post-lifting morphology (tent type and flat type) is probably related to an optimal preoperative bone height, and an unsatisfactory post-lifting morphology is related to a low preoperative sinus floor height. The sagittal plane evaluation correlates with the coronal plane and biplane evaluation and is thus more recommended.
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Affiliation(s)
- Zhi Wang
- Second Clinical Division, School and Hospital of Stomatology, Peking University, Beijing 100101, China
| | - Qi Jia
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing 100081, China
- The Conversationalist Club, School of Stomatology, Shandong First Medical University, Jinan, Shandong 250117, China
| | - Heng Bo Jiang
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing 100081, China
- The Conversationalist Club, School of Stomatology, Shandong First Medical University, Jinan, Shandong 250117, China
| | - Jianmin Han
- Department of Dental Materials, Peking University School and Hospital of Stomatology, Beijing 100081, China
| | - Lidong Zou
- Second Clinical Division, School and Hospital of Stomatology, Peking University, Beijing 100101, China
| | - Guangliang Niu
- Department of Oral Prosthodontics, The First Affiliated Hospital of Nanchang University, Nanchang 330006, China
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13
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Cavalcante DDS, Silva PGDB, Carvalho FSR, Quidute ARP, Kurita LM, Cid AMPL, Ribeiro TR, Gurgel ML, Kurita BM, Costa FWG. Is jaw fractal dimension a reliable biomarker for osteoporosis screening? A systematic review and meta-analysis of diagnostic test accuracy studies. Dentomaxillofac Radiol 2021; 51:20210365. [PMID: 34767466 PMCID: PMC9499197 DOI: 10.1259/dmfr.20210365] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To summarize the evidence on the feasibility of maxillomandibular imaging exams-related fractal dimension (FD) in screening patients with osteoporosis. METHODS This registered systematic review followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses of Diagnostic Test Accuracy statement. High sensitivity search strategies were developed for six primary databases and grey literature. Quality Assessment of Diagnostic Accuracy Studies (QUADAS-2) items evaluated the risk of bias, and the GRADE approach assessed the evidence certainty. RESULTS From 1034 records initially identified through database searching, four studies were included (total sample of 747 patients [osteoporosis, 136; control group, 611]). The meta-analysis showed that the overall sensitivity and specificity of the FD were 86.17 and 72.68%, respectively. In general, all studies showed low RoB and applicability concern. The certainty of the evidence was very low to moderate. CONCLUSIONS This systematic review showed that the jaw-related FD presented sensitivity and specificity values higher than 70%, and its sensitivity in osteoporosis screening was a better parameter than specificity.
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Affiliation(s)
- Davi de Sá Cavalcante
- Division of Radiology, Postgraduate Program in Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | | | | | - Ana Rosa Pinto Quidute
- Division of Endocrinology and Diabetology, Walter Cantídio University Hospital, Fortaleza, Ceará, Brazil
| | - Lúcio Mitsuo Kurita
- Division of Radiology, Postgraduate Program in Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | | | - Thyciana Rodrigues Ribeiro
- Division of Patient with Special Needs, Postgraduate Program in Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Marcela Lima Gurgel
- Division of Radiology, Postgraduate Program in Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Bianca Moreira Kurita
- Division of Pharmacology, Maurício de Nassau Center University, Fortaleza, Ceará, Brazil
| | - Fábio Wildson Gurgel Costa
- Division of Radiology, Postgraduate Program in Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil
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14
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GOYUSHOV S, DURSUN E, ORHAN K, TÖZÜM T. Three-Dimensional Calculation of Sinus Augmentation Volume after Maxillary Sinus Floor Elevation. CUMHURIYET DENTAL JOURNAL 2021. [DOI: 10.7126/cumudj.858177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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15
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Starch-Jensen T, Deluiz D, Vitenson J, Bruun NH, Tinoco EMB. Maxillary Sinus Floor Augmentation with Autogenous Bone Graft Compared with a Composite Grafting Material or Bone Substitute Alone: a Systematic Review and Meta-Analysis Assessing Volumetric Stability of the Grafting Material. EJOURNAL OF ORAL MAXILLOFACIAL RESEARCH 2021; 12:e1. [PMID: 33959236 PMCID: PMC8085675 DOI: 10.5037/jomr.2021.12101] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 03/23/2021] [Indexed: 11/16/2022]
Abstract
Objectives Test the hypothesis of no difference in the volumetric stability of the grafting material following maxillary sinus floor augmentation with autogenous bone graft compared with composite grafting material or bone substitute alone applying the lateral window technique. Material and Methods MEDLINE (PubMed), Embase, Cochrane library and hand-search of relevant journals were conducted. Human studies published in English until the 9th of October 2020 were included. Outcome measures included three-dimensional volumetric changes of the grafting material and potential predictive parameters. Volumetric changes were evaluated by descriptive statistics and meta-analysis including 95% confidence interval. Results Electronic search and hand-searching resulted in 102 entries. Four randomized controlled trials with unclear risk of bias fulfilled the inclusion criteria. The volumetric stability of the grafting material was significantly improved by mixing autogenous bone graft with a non-resorbable xenograft compared with autogenous bone graft. Meta-analyses assessing absolute and relative volumetric changes demonstrated no significant differences between autogenous bone graft compared with allogeneic bone graft, synthetic biomaterials combined with autogenous bone graft or used alone. Association between volumetric changes of the grafting material and potential predictive parameters were not assessed in the included studies. Conclusions Volumetric reduction of the augmented area seems inevitable following maxillary sinus floor augmentation regardless of the grafting material. The volumetric stability of autogenous bone graft is improved with addition of xenograft compared with autogenous bone graft. However, conclusions drawn from this systematic review should be interpreted with caution since only four studies using three-dimensional radiographic measurements were included.
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Affiliation(s)
- Thomas Starch-Jensen
- Department of Oral and Maxillofacial Surgery, Aalborg University Hospital, AalborgDenmark
| | - Daniel Deluiz
- Department of Periodontology, Rio de Janeiro State University, Rio de JaneiroBrazil
| | - Julie Vitenson
- Department of Oral and Maxillofacial Surgery, Aalborg University Hospital, AalborgDenmark
| | - Niels Henrik Bruun
- Unit of Clinical Biostatistics, Aalborg University Hospital, AalborgDenmark
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16
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Nagata K, Fuchigami K, Kitami R, Okuhama Y, Wakamori K, Sumitomo H, Kim H, Okubo M, Kawana H. Comparison of the performances of low-crystalline carbonate apatite and Bio-Oss in sinus augmentation using three-dimensional image analysis. Int J Implant Dent 2021; 7:24. [PMID: 33754242 PMCID: PMC7985233 DOI: 10.1186/s40729-021-00303-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 02/12/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND In locations where the alveolar bone height is low, such as at the maxillary molars, implant placement can be difficult, or even impossible, without procedures aimed at generating new bone, such as sinus lifts. Various types of bone graft materials are used after a sinus lift. In our study, a three-dimensional image analysis using a volume analyzer was performed to measure and compare the volume of demineralized bovine bone mineral (Bio-Oss®) and carbonate apatite (Cytrans®) after a sinus lift, as well as the amount of bone graft material resorption. Patient data were collected from cone-beam computed tomography images taken before, immediately following, and 6 months after the sinus lift. Using these images, both the volume and amount of resorption of each bone graft material were measured using a three-dimensional image analysis system. RESULTS The amount of bone resorption in the Bio-Oss®-treated group was 25.2%, whereas that of the Cytrans®-treated group was 14.2%. A significant difference was found between the two groups (P < 0.001). CONCLUSIONS Our findings indicate that the volume of bone resorption was smaller in the Cytrans®-treated group than in the Bio-Oss®-treated group, suggesting that Cytrans® is more promising for successful implant treatments requiring a sinus lift.
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Affiliation(s)
- Koudai Nagata
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, 238-8580, Japan
| | - Kei Fuchigami
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, 238-8580, Japan
| | - Ryoji Kitami
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, 238-8580, Japan
| | - Yurie Okuhama
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, 238-8580, Japan
| | - Kana Wakamori
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, 238-8580, Japan
| | - Hirokazu Sumitomo
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, 238-8580, Japan
| | - Hyunjin Kim
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, 238-8580, Japan
| | - Manabu Okubo
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, 238-8580, Japan
| | - Hiromasa Kawana
- Department of Oral and Maxillofacial Implantology, Kanagawa Dental University, 82 Inaoka-cho, Yokosuka, 238-8580, Japan.
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17
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Ying Y, Li B, Liu C, Xiong Z, Bai W, Li J, Ma P. A biodegradable gelatin-based nanostructured sponge with space maintenance to enhance long-term osteogenesis in maxillary sinus augmentation. J Biomater Appl 2020; 35:681-695. [PMID: 33059516 DOI: 10.1177/0885328220964446] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The search for bone substitutes that are biodegradable, ensure space maintenance, and have osteogenic predictability, is ongoing in the field of sinus augmentation. We thus compared the bone regeneration potential of nanostructured sponges (NS-Sponge) with that of collagen-stabilized inorganic bovine bones (BO-Collagen), gelatin sponges (Gelatin), and blood clots (Cont) in sinus augmentation of rabbits. NS-Sponge was prepared by thermally induced phase separation with porogen leaching techniques. All the materials were non-hemolytic and cytocompatible. The porous and nanofibrous NS-Sponge showed better dimensional stability to support cell growth and osteogenic differentiation. In vivo, the sinus membrane collapsed in Cont and Gelatin, while BO-Collagen and NS-Sponge maintained the elevated height as assessed by come-beam computed tomography. Limited bone regeneration was observed in Cont and Gelatin. In the entire implanted area, histological analysis revealed a higher percentage of new bone area at 4 weeks of BO-Collagen treatment; however, a significantly greater increase in new bone area was observed after 12 weeks of NS-Sponge treatment. The 12-week remnant NS-Sponge material was significantly lower than the 4-week remnant material. Overall, NS-Sponge may be highly recommended for sinus augmentation, as it exhibits numerous advantages, including excellent operability, clear imaging characteristics, space maintenance, biodegradability, and superior osteogenic potential.
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Affiliation(s)
- Yiqian Ying
- Department of Dental Implant Center, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Beibei Li
- Department of Dental Implant Center, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Changying Liu
- Department of Dental Implant Center, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Zuochun Xiong
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, China
| | - Wei Bai
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, China
| | - Jun Li
- Department of Dental Implant Center, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China.,Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Pan Ma
- Department of Dental Implant Center, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
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