Clinical Oral Implants Research最新文献

{"title":"Evolution in the Peri-Implant Oral Microbiome and Their Relationship to Long-Term Marginal Bone Loss: A Randomized Clinical Study.","authors":"Pablo Galindo-Moreno, Lourdes Gutierrez-Garrido, Juan Duarte, Iñaki Robles-Vera, Natividad Martin-Morales, Francisco O'Valle, Allinson Olaechea, Ana Belén Carrillo-Galvez, Miguel Padial-Molina","doi":"10.1111/clr.14426","DOIUrl":"https://doi.org/10.1111/clr.14426","url":null,"abstract":"<p><strong>Objectives: </strong>To analyze the clinical, radiographic, and microbiological changes around implants with a multiphosphonate-treated surface, prosthetically loaded with two different protocols after 5 years of functional loading.</p><p><strong>Material and methods: </strong>A randomized clinical trial was designed to initiate prosthetic loading over single dental implants after 8 (control) or 4 weeks (test). Several variables were analyzed, including patients' level variables, intrasulcular biofilm, and marginal bone level at several time points, from 1 to 60 months after loading.</p><p><strong>Results: </strong>A total of 23 patients attended the 5-year follow-up visit. No clinical variable changed over time, except mucosal thickness from dental impressions to prosthesis delivery. No significant radiographic differences were observed either over time or between groups. Microbiologically, there was a change in the microbiome from the constitution of the biological width to the final follow-up. Seven species changed significantly, with a significant increase in Porphyromonas gingivalis and Tannerella forsythia from 12 to 60 months and a decrease in the other species. However, changes in the relative abundance of species over time, whether increasing or decreasing, did not show a correlation with marginal bone loss.</p><p><strong>Conclusion: </strong>Implants with a multiphosphonate-treated surface showed no differences in clinical and radiographic variables after 5 years of function, regardless of the prosthetic loading protocol used. From a microbiological point of view, although there was an evolution of the microbiome in the peri-implant sulcus towards Socransky's red circle pathogenic bacteria, no microorganism showed a significant correlation with the radiographic changes produced in the peri-implant bone over time.</p><p><strong>Trial registration: </strong>ClinicalTrials.gov identifier: NCT03059108.</p>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":" ","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143584993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Customized Bone Regeneration-A Retrospective Clinical Follow-Up Study of the Aesthetic Outcome.","authors":"Marcus Seiler, Peer W Kämmerer, Amely Hartmann","doi":"10.1111/clr.14425","DOIUrl":"https://doi.org/10.1111/clr.14425","url":null,"abstract":"<p><strong>Objectives: </strong>This study aimed to evaluate the long-term stability of soft tissue aesthetics as the primary outcome concerning bone levels (secondary outcome) following customized bone regeneration. Additionally, the influence of flap management techniques on aesthetic outcomes in customized bone augmentation was assessed.</p><p><strong>Material and methods: </strong>21 patients (45 implants) who underwent reconstruction of three-dimensional bone defects using patient-specific titanium meshes at least 5 years prior were evaluated. The Pink Esthetic Score (PES) was used to assess aesthetic outcomes. Incision lines and flap designs were correlated with aesthetic parameters (primary outcome) and bone levels (secondary outcome). Radiographic measurements of bone levels were taken at implant placement and after more than 5 years. Changes over time in aesthetic outcomes were analyzed using Fisher's Exact Test, Mann-Whitney U-test, and Kruskal-Wallis Test.</p><p><strong>Results: </strong>Crestal incisions without vertical releasing incisions showed significantly superior outcomes in aesthetics (primary outcome) and bone level mesially (p < 0.001) and distally (p = 0.001) compared to Poncho flaps or crestal incisions with vertical releasing incisions after > 5 years (secondary outcome). Across parameters, 52.6% to 69.2% of cases achieved a maximum aesthetic rating (\"2\"). The mean PES score was 11.09 (±3.70) across all implants. The implant survival rate was 100%.</p><p><strong>Conclusions: </strong>A crestal incision line without releasing incisions was superior in preserving bone levels and achieving favorable aesthetic outcomes. The findings highlight the importance of incision and flap design in the long-term outcomes of customized bone regeneration. The 100% implant survival rate and lack of side effects further underscore the reliability of this approach.</p>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":" ","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143584991","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nano-Structuring of Zirconia Implant Surfaces as an Approach to Improve Clinical Performance and Economic Efficiency-A Preclinical Study on Osseointegration.","authors":"Nadja Rohr, Maria Permuy, Carolin Fischer, Mónica López-Peña, Fernando M Muñoz, Jens Fischer","doi":"10.1111/clr.14422","DOIUrl":"https://doi.org/10.1111/clr.14422","url":null,"abstract":"<p><strong>Objectives: </strong>Nano-structuring of zirconia dental implants would simplify the production process compared to the currently applied sandblasting and etching. Prior in vitro studies even revealed faster cell spreading and increased viability of osteoblasts on nano-structured zirconia surfaces. The objective was to evaluate the osseointegration potential of nano-structured zirconia implants in a sheep model.</p><p><strong>Material and methods: </strong>Three different nano-structured surfaces were compared to a commercially available control (ZLA) by measuring the mean bone change (MBC) in radiographs and by histomorphometric analysis after 4 and 8 weeks in sheep. Radiographic and histomorphometric measurements were subjected to Kruskal-Wallis ANOVAs to test the effects of surface and time point (α = 0.05).</p><p><strong>Results: </strong>The overall MBC increased from implant placement to 4 (0.9 mm ± 0.8 mm) to 8 weeks (1.3 mm ± 0.7 mm) (p = 0.009) with no significant differences between the groups. Histological assessment revealed that bone-to-implant contact (BIC) was increased for the micro-structured control surface compared with the nano-structured surfaces at both time points. Bone remodeling was similar for all surfaces and increased from 4 to 8 weeks.</p><p><strong>Conclusions: </strong>BIC in the sheep model is more dependent on surface roughness on a micro- than nano-structured level, while bone remodeling in the present setup was not influenced by surface topography. Nano-structured zirconia surfaces may be an option for clinical application; however, further research using loaded implants is needed to clarify whether BIC is sufficient to achieve long-term stability.</p>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":" ","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143482125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trueness of Customized Abutment Data Superimposition on Incompletely Scanned Impression: An In Vitro Study","authors":"Yeon‐Wha Baek, Bongju Kim, Myung‐Joo Kim, Ho‐Beom Kwon, Young‐Jun Lim","doi":"10.1111/clr.14401","DOIUrl":"https://doi.org/10.1111/clr.14401","url":null,"abstract":"ObjectivesThis study evaluated the feasibility and trueness of superimposing titanium customized abutment library data onto scans of abutments with incomplete areas along margins or proximal surfaces, comparing this approach to the CAD program's hole‐filling function.Material and MethodsA dental model with one implant was used. A titanium customized abutment was scanned to create abutment library data. Reference data were generated using a laboratory scanner (Medit T500) and the abutment and neighboring teeth were scanned 10 times with Medit I500, an intraoral scanner (IOS group). Superimposition with abutment library data was performed for fully scanned (F), margin‐deleted (M1 and M2), and proximal‐deleted scans (P). The “Close holes” function of exocad DentalCAD was applied to create the PF group. Trueness was assessed by comparing root mean square (RMS) and point‐based deviations against reference data using Geomagic control X. Statistical analysis was conducted using one‐way ANOVA and Tukey HSD tests.ResultsSuperimposition improved trueness compared to the IOS group, reducing RMS from 42.11 ± 1.11 to 36.37–36.61 μm in the F, M1, M2, and P groups (<jats:italic>p</jats:italic> &lt; 0.001). No significant differences were observed among superimposition groups. The PF group exhibited greater deviations than all superimposition groups (<jats:italic>p</jats:italic> &lt; 0.001). Point‐based analysis showed significant improvement in superimposed groups (<jats:italic>p</jats:italic> &lt; 0.05), except at marginal ridges (<jats:italic>p</jats:italic> &gt; 0.05). The hole‐filling function did not enhance trueness (<jats:italic>p</jats:italic> &gt; 0.05).ConclusionsSuperimposing abutment library data improve the trueness of intraoral scans, even when areas along margins and proximal surfaces are incomplete.","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":"3 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143473452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Effect of Different Socket Morphologies of a Maxillary Central Incisor on the Accuracy of Immediate Implants Placed With Freehand or Guided Surgery—An In Vitro Study","authors":"Gunjan Pruthi, Roy Judge, Jaafar Abduo, Luan Ngo, Attila Gergely","doi":"10.1111/clr.14419","DOIUrl":"https://doi.org/10.1111/clr.14419","url":null,"abstract":"ObjectiveTo evaluate the effect of socket morphology of a maxillary central incisor on accuracy of single implants placed with freehand or static guided surgery in simulated extraction sockets.Materials and MethodsAn anatomic central incisor was digitally designed and subtracted from the model to create socket morphology 1 (SM1), socket morphology 2 (SM2), and socket morphology 3 (SM3) simulating a central, retroclined, and proclined tooth. 90 implants were placed with freehand (FH); pilot guided (PG) and fully guided (FG) protocols in 30 models of SM1, SM2 and SM3 each. Implant accuracy was measured for vertical deviation (MVP), maximum horizontal deviation at implant platform (MHP) and apex (MHA), buccolingual (BLP, BLA), mesiodistal (MDP, MDA), and global angular deviation (GAD) deviations.ResultsThe effect of interaction between SM and protocol was significant only on MVP (<jats:italic>p</jats:italic> = 0.03) and GAD (<jats:italic>p</jats:italic> = 0.000). Individual effect of SM was significant for all variables except mesiodistal deviation. Significant difference was observed among all groups for MHA and BLP, between SM1 and SM2 for all variables except mesiodistal deviation, between SM2 and SM3 for MHP and SM1 and SM3 for BLA (<jats:italic>p</jats:italic> &lt; 0.05). Implant accuracy was almost similar with FG or PG protocol (<jats:italic>p</jats:italic> &gt; 0.05) except for MVP (FG vs. PG = 0.01). Buccolingual inaccuracies of implants were higher than mesiodistal deviations.ConclusionsVertical, horizontal, and angular deviations were highest in SM2 and least in group SM1. Within each socket, higher implant accuracy was observed with guided protocols than freehand placement. Results of this in vitro study should be interpreted with caution as the outcome may be different in real clinical settings.","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":"15 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143434948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of Two Different Sizes of Deproteinized Bovine Bone Mineral Particles in Lateral Sinus Floor Elevation With Simultaneous Implant Placement: A Radiographic Study","authors":"Xiaoru Qin, Yue Xi, Fei Teng, Zhikang Wang, Guoli Yang","doi":"10.1111/clr.14421","DOIUrl":"https://doi.org/10.1111/clr.14421","url":null,"abstract":"ObjectivesTo investigate the radiographic changes of two different particle sizes of deproteinized bovine bone mineral (DBBM) following lateral sinus floor elevation (LSFE) with simultaneous implant placement.Materials and MethodsA total of 104 patients with 128 implants receiving LSFE with simultaneous implant placement were included and divided according to the grafted DBBM: 47 using small particle sizes (0.25–1 mm), 57 using large particle sizes (1–2 mm). Cone beam computed tomography (CBCT) images were taken at three points (T0: before surgery, T1: immediate postoperative, T2: 6‐month postoperative). The two‐dimensional and three‐dimensional augmentation parameters, including apical bone height (ABH), endo‐sinus bone gain (ESBG), peri‐implant bone height (PBH), marginal bone loss (MBL), and augmented bone volume (AV) were measured. The differences in augmentation parameters between the small and large particle sizes of DBBM were compared.ResultsAV was 916.76 (657.88–1243.74) mm<jats:sup>3</jats:sup> at T1 and decreased to 823.73 (583.12–1178.79) mm<jats:sup>3</jats:sup> at T2, pointing to a relative volume stability of 89.8%. Although ABH did not significantly differ between the two groups at T1 (<jats:italic>p</jats:italic> = 0.379) and T2 (<jats:italic>p</jats:italic> = 0.264), AV, ESBG, and PBH were significantly higher in the large particle group. At the 6‐month follow‐up, the reduction rates in AV (<jats:italic>p</jats:italic> &lt; 0.001), ESBG (<jats:italic>p</jats:italic> = 0.022), and PBH (<jats:italic>p</jats:italic> = 0.004) were lower in the large particle group.ConclusionsThe augmentation outcome decreased after LSFE with simultaneous implant placement at the 6‐month follow‐up. Using the large particle size of DBBM improved the augmentation stability.","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":"20 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143434950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Accuracy of a Novel Robot‐Assisted System and Dynamic Navigation System for Dental Implant Placement: A Clinical Retrospective Study","authors":"Jianping Chen, Yude Ding, Ruijue Cao, Yuchen Zheng, Liheng Shen, Linhong Wang, Fan Yang","doi":"10.1111/clr.14420","DOIUrl":"https://doi.org/10.1111/clr.14420","url":null,"abstract":"AimThis clinical retrospective study aimed to compare the deviations in single‐tooth implant placement using novel semi‐autonomous robotic‐assisted surgery system (sa‐RASS) and dynamic navigation system (DNS) methods.Materials and MethodsA retrospective analysis of medical records from January to December 2023 was conducted to compare the implantation accuracy of the sa‐RASS and DNS in partially edentulous patients using cone‐beam computed tomography. Platform, apex, and angular deviations were measured and analyzed. The Kolmogorov–Smirnov test was used to check the data distribution, along with <jats:italic>t</jats:italic>‐tests or Mann–Whitney U‐tests, where appropriate.ResultsFifty‐seven patients (57 implants) were analyzed: 29 (29 implants) in the sa‐RASS group and 28 (28 implants) in the DNS group. The comparison of platform, apex, and angular deviation between the sa‐RASS group and DNS group were 0.91 ± 0.46 mm vs. 1.26 ± 0.51 mm (<jats:italic>p</jats:italic> &lt; 0.001), 1.06 ± 0.60 mm vs. 1.51 ± 0.56 mm (<jats:italic>p</jats:italic> &lt; 0.001), and 3.07° ± 1.66° vs. 3.71° ± 1.64° (<jats:italic>p</jats:italic> &gt; 0.05), respectively. In addition, there was no significant difference in the accuracy of different implant regions (premolar, molar, maxilla, and mandible) or implant length (<jats:italic>p</jats:italic> &gt; 0.05).ConclusionsIn the present study, sa‐RASS implant placement showed better positional accuracy than DNS implant placement in platform and apex deviation, although these improvements in accuracy may have limited clinical relevance, suggesting that the sa‐RASS might be advantageous in dental implant surgery.Trial Registration: <jats:ext-link xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"http://clinicaltrials.gov\">ClinicalTrials.gov</jats:ext-link> identifier: ChiCTR2400085089","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":"1007 1","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143417386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Peri-Implant Marginal Bone Changes Using High-Speed Drilling With Irrigation Versus Low-Speed Drilling Without Irrigation: A Randomized Clinical Trial With 12 Months of Follow-Up.","authors":"Juan Carlos Bernabeu-Mira, Miguel Peñarrocha-Diago, Luigi Canullo, Fabio Camacho-Alonso, Julio Rojo-Sanchis, David Peñarrocha-Oltra","doi":"10.1111/clr.14416","DOIUrl":"https://doi.org/10.1111/clr.14416","url":null,"abstract":"<p><strong>Objective: </strong>To analyse marginal bone level changes at implants placed using high-speed drilling (800 rpm) with irrigation versus low-speed drilling (150 rpm) without irrigation. Peri-implant soft-tissue parameters were assessed and the influence of bone density and vertical dimensions of supracrestal soft tissue on marginal bone level changes was evaluated.</p><p><strong>Material and methods: </strong>Patients with a single posterior edentulous area were included in a randomized parallel single-blinded clinical trial. The study groups were: high-speed drilling with irrigation (CG:control group) and low-speed drilling without irrigation (TG:test group). Marginal bone level changes were measured using parallelized periapical radiographs during 12-months. Probing depth, bleeding on probing, plaque index, buccal keratinized mucosa, suppuration and recession were measured. The mean total bone density was evaluated in Hounsfield Units. Mann-Whitney U-test for non-parametric variables and t-test for parametric variables were employed.</p><p><strong>Results: </strong>A total of 66 patients were included (33 per group). The implant success rate was 100% for both groups according to Misch classification. No statistically significant differences were found regarding marginal bone loss (CG: -0.03 (0.17); TG: -0.01 (0.05)), bone remodeling (CG: 0.81 (0.64); TG: 0.86 (0.54)), or peri-implant soft tissue parameters (p > 0.05). Bone density showed no significant correlation with the peri-implant bone and soft-tissue changes. The vertical supracrestal soft tissue was inversely correlated to peri-implant bone remodeling.</p><p><strong>Conclusions: </strong>Within the limits, high-speed drilling with irrigation and low-speed drilling without irrigation had no statistically significant influence on the peri-implant marginal bone and soft tissue changes during 12 months of follow-up. These variables were not significantly influenced by bone density.</p><p><strong>Trial registration: </strong>Unique identification number: NCT05286866.</p>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":" ","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143413599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Combined Effect of Abutment Height and Restoration Emergence Angle on Peri-Implant Bone Loss Progression: A Retrospective Analysis.","authors":"Jonathan Misch, Sawsan Abu-Reyal, Danyal Lohana, Obada Mandil, Muhammad H A Saleh, Junying Li, Hom-Lay Wang, Andrea Ravidà","doi":"10.1111/clr.14408","DOIUrl":"https://doi.org/10.1111/clr.14408","url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to investigate the combined effect of trans-mucosal abutment height (TmAH) and restorative emergence angle (REA) on marginal bone loss (MBL) around bone-level implants.</p><p><strong>Methods: </strong>Implant radiographs 12-18 months after crown placement (T0) and at least one year later (T1) were retrospectively analyzed. Sites were separated into four groups: Long/Narrow-Angle (LN) with TmAH > 2 mm and REA < 30°, Long/Wide-Angle (LW) with TmAH > 2 mm and REA ≥ 30°, Short/Narrow-Angle (SN) with TmAH < 2 mm and REA < 30°, and Short/Wide-Angle (SW) with TmAH < 2 mm and REA ≥ 30°. MBL was calculated, and multiple linear regression analysis was performed to control for patient-level and implant/prosthesis-level factors.</p><p><strong>Results: </strong>192 implants pertaining to 119 patients were included. Group significantly influenced MBL experience (p < 0.001). Group SW experienced on average 0.48 mm (95% CI: 0.25-0.71, p < 0.001), 0.43 mm (95% CI: 0.18-0.68, p = 0.001), and 0.25 mm (95% CI: 0.00-0.45, p = 0.013) greater MBL compared to Groups LN, LW, and SN, respectively. Group was also a significant factor impacting the development of peri-implantitis (p = 0.041), with Group SW displaying a roughly 4× greater likelihood of having peri-implantitis (PI) diagnosed compared to Groups LN (OR: 4.04; p = 0.091) and LW (OR: 4.19; p = 0.013). Every 1 mm increase in TmAH significantly decreased the likelihood of MBL > 0 mm (OR = 0.63; p = 0.003).</p><p><strong>Conclusions: </strong>Abutment height > 2 mm may play a role in reducing PI and MBL related to ≥ 30° REA around bone-level implants. REA was found to only be a significant factor when TmAH is less than 2 mm.</p>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":" ","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143381678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Bone Microstructure Derived From CBCT on the Accuracy of Robot-Assisted Implant Surgery: A Retrospective Study.","authors":"Wenxi Dong, Linhong Wang, Yuanna Zheng, Xulan Yang, Liheng Shen, Fan Yang, Yuchen Zheng","doi":"10.1111/clr.14414","DOIUrl":"https://doi.org/10.1111/clr.14414","url":null,"abstract":"<p><strong>Objective: </strong>The aim of this study was to investigate the influence of bone microstructure on the accuracy of robot-assisted dental implant surgery.</p><p><strong>Materials and methods: </strong>This retrospective study analyzed 52 patients who received robot-assisted implant surgery between January 2023 and October 2023. Cone beam computed tomography (CBCT) scans were used to evaluate bone microstructural parameters, including the bone volume (BV), tissue volume (TV), bone volume fraction (BV/TV), bone surface (BS), bone surface fraction (BS/BV), trabecular thickness (Tb.Th), and trabecular separation (Tb.Sp). Preoperative and postoperative CBCT data were used to evaluate implant accuracy, and the relationship between bone microstructure parameters and implant deviation including platform deviation, apex deviation, and angular deviation was statistically analyzed.</p><p><strong>Results: </strong>In robot-assisted implant surgery, BS/BV was a potential facilitator of several implant deviations, while BV/TV and Tb.Th were potential inhibitors of apex global deviation and angular deviation, respectively. Implant deviations were divided into two groups of large and small deviations by median, and the receiver operating characteristic (ROC) curve analysis showed that Tb.Th had the largest area under the ROC for predicting large apex global deviation, 0.711 (p < 0.001), with an optimal cutoff value > 0.179, a sensitivity and specificity of 70.37% and 76.92%.</p><p><strong>Conclusion: </strong>The study concluded that bone microstructure might affect the accuracy of dental implant placement in robotic surgeries. Incorporating bone quality assessments into preoperative planning may enhance the precision and outcomes of implant procedures, highlighting the potential for further refinement in robotic-assisted dental surgery techniques.</p><p><strong>Trial registration: </strong>ClinicalTrials.gov identifier: ChiCTR2400085813.</p>","PeriodicalId":10455,"journal":{"name":"Clinical Oral Implants Research","volume":" ","pages":""},"PeriodicalIF":4.8,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143255016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}