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1.
Georgian Med News ; (350): 6-15, 2024 May.
Article in English | MEDLINE | ID: mdl-39089263

ABSTRACT

Artificial intelligence (AI) is making waves in dentistry, with applications in predicting dental implant success. AI models analyze patient data (X-rays, medical history) to identify factors influencing implant viability. The aim is to identify existing research on the use of AI-based predictive models in dental implants. The following databases were searched: Web of Science, Scopus, Google Scholar, PubMed, and Cochrane Library, using the keywords "Artificial Intelligence," "Dentistry," "Implant," and "Success." The studies were reviewed qualitatively, as quantitative analysis was not feasible due to the lack of specific outcomes and the insufficient number of studies for comparison. Technology has presented dental implantology with many opportunities, and it is through artificial intelligence that it is advancing. AI is being applied to detect potential implant failure patients, prognosis osseointegration, improve implant design, and master planning and also for data analysis to predict early complications. Decision trees, random forests, Artificial Neural Networks (ANN), and Deep Learning (DL) improve diagnostics and treatment planning and introduce a powerful predictive model for a successful implant.


Subject(s)
Artificial Intelligence , Dental Implants , Neural Networks, Computer , Humans , Deep Learning , Dental Implantation/methods , Decision Trees
2.
Am J Case Rep ; 25: e943341, 2024 Aug 06.
Article in English | MEDLINE | ID: mdl-39104085

ABSTRACT

BACKGROUND In the early 1980s, Brånemark described the use of cylindrical titanium dental implants integrated with bone. Since then, significant advances in dental implant technology have resulted in improved function and cosmetic appearance. This report describes an 87-year-old woman with a 31-year history of revision implant dentistry, initially for severe alveolar atrophy of the premolar and upper molar teeth. CASE REPORT In 1992, a severe alveolar atrophy of the upper premolar and molar areas was treated with the insertion of 4 fixtures in the frontal sector and a prosthesis superimposed anchored to the fixtures and with a rear support on the only surviving teeth. In 2004, the teeth were extracted and a distal support to the prosthesis was obtained with 2 fixtures in the maxillary tuberosity. In 2018, to eliminate the need for home removal of the prosthesis, 2 zygomatic fixtures were positioned and a fixed prosthesis was made. In 2023, at the last follow-up, satisfactory function and aesthetics of the prosthesis were reported and the bone levels at the fixtures appeared stable. CONCLUSIONS This report demonstrates the improvements in dental implant technology over more than 30 years in a single patient and highlights the importance of improved function and cosmetic appearance.


Subject(s)
Dental Implants , Humans , Female , Aged, 80 and over , Reoperation , Alveolar Bone Loss/surgery , Dental Implantation, Endosseous , Dental Prosthesis, Implant-Supported
3.
Shanghai Kou Qiang Yi Xue ; 33(3): 301-305, 2024 Jun.
Article in Chinese | MEDLINE | ID: mdl-39104348

ABSTRACT

PURPOSE: To compare and analyze the orthodontic effects of micro-implant screw support and flat guide plate on excessive deep overbite of lower anterior teeth. METHODS: Eighty-two patients with excessive deep overbite of the lower anterior teeth who were treated from January to December 2022 were selected and randomly divided into two groups (41 in each group) by random number table method. Both groups were treated with straight wire arch orthodontic technology, and the anterior teeth were supported by micro-implant screws (micro-implant screw group) and flat guide plates (flat guide plate group), respectively. The effect of upper anterior tooth compression, changes in occlusal plane, and apical absorption were compared between the two groups. SPSS 25.0 software package was used for statistical analysis. RESULTS: There were no significant changes in SNA angle, SNB angle, ANB angle, U1-PP, U6-PP, and L6-MP before and after treatment between the two groups (P>0.05). L1-MP significantly increased in both groups after treatment than before treatment(P<0.05). There was no significant difference in bite opening, Spee curve depth, U1 depression, L1 depression, U6 elongation, L6 elongation and occlusal opening time between the two groups before and after treatment(P>0.05). The root apex absorption of the mandibular central incisors and lateral incisors in the micro-implant screw group was significantly lower than that in the flat guide plate group(P<0.05), while there was no significant difference in root apex absorption between the two groups of canines(P>0.05). CONCLUSIONS: Both micro-implant screw support and flat guide plate can effectively lower the mandibular anterior teeth in the treatment of deep overbite in adults, with good orthodontic effects. However, the latter can lead to increased root resorption.


Subject(s)
Bone Screws , Overbite , Humans , Overbite/therapy , Dental Implants , Mandible/surgery , Incisor , Orthodontic Anchorage Procedures/instrumentation , Orthodontic Anchorage Procedures/methods
4.
Int J Esthet Dent ; 19(3): 252-265, 2024 08 02.
Article in English | MEDLINE | ID: mdl-39092819

ABSTRACT

AIM: The present study aims to describe an in-house protocol for fully guided zygomatic implant surgery and prosthesis repositioning. MATERIALS AND METHODS: Four extramaxillary zygomatic dental implants (ZIs) were placed in one patient. The preoperative phase included digital planning, through which a surgical guide was designed and created. The analysis of the accuracy of guided surgery and the guided prosthesis repositioning was carried out by superimposing the digital planning with the final postsurgical implant positioning through CBCT. The radiologic evaluation included implant angular deviation, entrance and exit deviation, platform deviation, and apex apicocoronal and mesiodistal deviation. The prosthetic evaluation was performed in three directions: buccopalatal, apicocoronal, and mesiodistal. RESULTS: All the ZIs successfully osseointegrated after 3 months of healing, with no complications. The mean axial angular implant deviation was 0.52 ± 0.36 degrees, and the mean implant depth deviation was 0.47 ± 0.28 mm. The entrance and exit deviation of the implants was 0.74 ± 0.42 mm and 0.7 ± 0.43 mm, respectively. The virtual prosthesis was superimposed and compared with the standard tessellation language file of the provisional polymethyl methacrylate prosthesis at the level of the first molars and central incisors; the mean buccopalatal deviation was 0.6 ± 0.035 mm, the mean apicocoronal deviation was 0.65 ± 0.11 mm, and the mean mesiodistal deviation was 0.3 ± 0.07 mm. CONCLUSIONS: According to the results obtained in this first case of the present case series, careful and meticulous digital planning based on the correct prosthetic parameters can safely guide the performance of surgery.


Subject(s)
Cone-Beam Computed Tomography , Surgery, Computer-Assisted , Zygoma , Humans , Zygoma/surgery , Surgery, Computer-Assisted/methods , Cone-Beam Computed Tomography/methods , Dental Implantation, Endosseous/methods , Dental Implants , Female , Male
5.
Int J Implant Dent ; 10(1): 38, 2024 Aug 05.
Article in English | MEDLINE | ID: mdl-39101986

ABSTRACT

PURPOSE: To retrospectively evaluate peri-implant bone loss and health status associated with the long-term use of laser surface-treated implants. METHODS: For control study, total of 23 titanium ASTM F136 grade 23 implants were placed in the edentulous molar area of the mandible. When the Implant Stability Quotient (ISQ) ≥ 70 and insertion torque value (ITV) ≥ 35-50 Ncm at the insertion site, an immediate provisional restoration was connected to the implant within a week after surgery. The definitive restorations were placed 2 months after surgery for all implants. 13 implants were immediately loaded, while 10 implants were conventionally loaded. For comparative study, Radiographs were taken from third years for and then annually for the subsequent eight years to monitor marginal bone loss. RESULTS: After eight year of implant installation, the average change in vertical bone loss was 0.009 mm (P < 0.001), while the average change in horizontal bone loss 8 year after implant placement was 0.026 mm (P < 0.001). The mean marginal bone loss was < 0.2 mm on average. CONCLUSIONS: In this retrospective study, laser-treated implants exhibit a low rate of bone absorption around the implants.


Subject(s)
Alveolar Bone Loss , Dental Implants , Retrospective Studies , Humans , Dental Implants/adverse effects , Male , Female , Alveolar Bone Loss/etiology , Alveolar Bone Loss/diagnostic imaging , Middle Aged , Treatment Outcome , Lasers , Aged , Surface Properties , Adult , Mandible/surgery , Dental Prosthesis Design , Immediate Dental Implant Loading/methods
6.
Clin Exp Dent Res ; 10(4): e937, 2024 Aug.
Article in English | MEDLINE | ID: mdl-39104130

ABSTRACT

BACKGROUND: Xenogenic collagen matrices (XCMs) are gaining popularity for soft tissue augmentation in dental implants; yet, gaps exist in our understanding of their comparative effectiveness. OBJECTIVE: This systematic review and meta-analysis focuses on studies that utilize soft tissue augmentation techniques for dental implants to improve keratinized mucosa width (KMW), soft tissue thickness (STT), and soft tissue volume (STV). We compared porcine collagen matrices with autogenous grafts when no bone grafts were utilized. MATERIALS AND METHODS: We searched databases such as PubMed, Scopus, and the Cochrane Central Register of Controlled Trials for randomized controlled trials and controlled clinical trials published between January 2013 and July 2023 that assessed the efficacy of XCM in peri-implant soft tissue augmentation. The primary outcome included KMW changes while the secondary outcome was STT/STV changes. Statistical analyses were conducted using a random- or fixed-effects model, and heterogeneity was assessed using I2 statistics. RESULTS: Nine studies were included in the qualitative analysis, and six were included in the meta-analysis. No significant intergroup differences were observed (p > 0.05), but a significant difference was observed in favor of KMW ≥ 2 mm. Heterogeneity among the studies varied at the 6- and 12-month follow-ups, with I2 values of 78% and 0%, respectively. The pooled mean difference between the XCM and autograft groups was -0.96 (-1.71 to -0.21), which shows that there was a larger increase in KMW in the autograft group compared with the XCM group (p < 0.05). CONCLUSIONS: Collagen matrices are less effective than autogenous grafts at increasing keratinized tissue and STT/STV, but the two techniques yield comparable aesthetic outcomes. Additional studies are necessary to better guide clinical practice and improve patient outcomes.


Subject(s)
Collagen , Dental Implants , Collagen/therapeutic use , Humans , Animals , Swine , Heterografts , Treatment Outcome , Randomized Controlled Trials as Topic
7.
Sci Rep ; 14(1): 18053, 2024 08 05.
Article in English | MEDLINE | ID: mdl-39103382

ABSTRACT

In this in vitro study, the use of a 445 nm diode laser was investigated for the decontamination of titanium dental implants. Different irradiation protocols and the effect of repetitive laser irradiation on temperature increase and decontamination efficacy were evaluated on titanium implant models. An automated setup was developed to realize a scanning procedure for a full surface irradiation to recapitulate a clinical treatment. Three irradiation parameter sets A (continuous wave, power 0.8 W, duty cycle (DC) 100%, and 5 s), B (pulsed mode, DC 50%, power 1.0 W, and 10 s), and C (pulsed mode, DC 10%, power 3.0 W, and 20 s) were used to treat the rods for up to ten consecutive scans. The resulting temperature increase was measured by a thermal imaging camera and the decontamination efficacy of the procedures was evaluated against Escherichia coli and Staphylococcus aureus, and correlated with the applied laser fluence. An implant's temperature increase of 10 °C was set as the limit accepted in literature to avoid thermal damage to the surrounding tissue in vivo. Repeated irradiation of the specimens resulted in a steady increase in temperature. Parameter sets A and B caused a temperature increase of 11.27 ± 0.81 °C and 9.90 ± 0.37 °C after five consecutive laser scans, respectively, while parameter set C resulted in a temperature increase of only 8.20 ± 0.53 °C after ten surface scans. The microbiological study showed that all irradiation parameter sets achieved a complete bacterial reduction (99.9999% or 6-log10) after ten consecutive scans, however only parameter set C did not exceed the temperature threshold. A 445 nm diode laser can be used to decontaminate dental titanium rods, and repeated laser irradiation of the contaminated areas increases the antimicrobial effect of the treatment; however, the correct choice of parameters is needed to provide adequate laser fluence while preventing an implant's temperature increase that could cause damage to the surrounding tissue.


Subject(s)
Dental Implants , Escherichia coli , Lasers, Semiconductor , Staphylococcus aureus , Titanium , Titanium/chemistry , Dental Implants/microbiology , Escherichia coli/radiation effects , Staphylococcus aureus/radiation effects , Decontamination/methods , Temperature , Humans , In Vitro Techniques
8.
Clin Oral Investig ; 28(9): 467, 2024 Aug 06.
Article in English | MEDLINE | ID: mdl-39107492

ABSTRACT

OBJECTIVE: To evaluate the dimensional changes in free gingival grafts (FGG) at implant sites in mandibular reconstruction patients. METHODS: Patients who received FGG 4 months after implant placement in the reconstructed mandible with no keratinized mucosa (KM) present were invited for re-examination after 36.7 ± 16.8 months (3.06 ± 1.4 years). Immediately after graft extraction (T0), graft width (GW), graft length (GL), graft thickness (GT), graft dimension (GD), and vertical bone height were documented. Re-examination (T1) included clinical examinations (GW, GL, GD, peri-implant probing depths, and modified Sulcus Bleeding Index), radiographic examination (marginal bone level), and medical chart review. RESULTS: Twenty patients and 62 implants (47 in fibula flaps and 15 in iliac flaps) were included. A significant decrease in GW (51.8%), GL (19.2%), and GD (60.2%), were found between T0 and T1 (p < .001). The univariate analysis showed that GW change was not significantly associated with reconstruction technique, baseline GL, baseline GT, baseline GD, implant location, or type of prosthesis. Implant survival rate of 100% was observed at follow-up. CONCLUSIONS: Within the limitations of the study, free gingival grafts at implant sites in the reconstructed mandible undergo dimensional change that result in a reduction of approximately 60% of the original graft dimension. Graft width decreased over 50%. CLINICAL RELEVANCE: FGG is the standard of care intervention for increasing the amount of KM around implants. This study was the first to evaluate the dimensional change in FGG at implant sites in mandibular reconstruction patients after a medium-term follow-up. CLINICAL TRIAL REGISTRATION: Clinical trial registration is not applicable as this study comprehends a retrospective analysis.


Subject(s)
Gingiva , Mandibular Reconstruction , Humans , Retrospective Studies , Male , Female , Middle Aged , Mandibular Reconstruction/methods , Gingiva/transplantation , Dental Implantation, Endosseous/methods , Treatment Outcome , Adult , Dental Implants , Mandible/surgery , Mandible/diagnostic imaging , Surgical Flaps , Aged , Fibula/transplantation
9.
BMC Oral Health ; 24(1): 870, 2024 Aug 01.
Article in English | MEDLINE | ID: mdl-39090634

ABSTRACT

BACKGROUND: The purpose of this pilot in-vitro study was to assess the effect of sterilization on the intra-implant axis, inter-implant axis, intra-implant distance and inter-implant distance of three implants in a straight line by using laboratory scanner (LBS) versus intra-oral scanner (IOS) with intra-oral scan bodies (ISB). METHODS: A printed 3D model with three internal hex analogs in the positions 15#,16#,17# was used. Zirkonzhan (ZZ) intra-oral scan body (ISB), two-piece titanium was used. The ZZ ISBs were scanned by 7 Series dental wings (LBS) and 30 times by Primescan (IOS) pre sterilization and 30 times post sterilization. For each scan (pre and post) stereolithography (STL) file was created and a comparison between all the scans pre sterilization and post sterilization were superimposed on the laboratory scan by using a 3D analyzing software. A Kolmogorov-Smirnov test performed followed by Wilcoxon Signed Ranks tests. (p < 0.05) Results: Post sterilization of the ZZ ISB, the mean errors were significantly increased for the inter-implant distances (p < 0.0005), intra-implant distances 1,2,3 (p < 0.0005), intra-implant axis 1,3 (p < 0.0005) and inter-implant axes 13,23 (p < 0.05). In contrast, the mean errors for intra-implant axis 2 (p < 0.0005) and inter-implant axis 12 (p < 0.0005) were significantly reduced. CONCLUSIONS: ZZ ISB showed changes in all four parameters after sterilization. The middle ISB had the largest changes in mean error regarding all four parameters. Sterilization process may affect the three-dimensional (3D) structure of the ZZ ISB after three cycles. There is a lack in the literature in this field and there is a need for further studies to explore the effect of sterilization (multiple cycles) on different ISBs and for creating an approved guidelines regarding the amount of sterilization for each ISB in the industry.


Subject(s)
Dental Implants , Sterilization , Sterilization/methods , Humans , In Vitro Techniques , Pilot Projects , Printing, Three-Dimensional , Imaging, Three-Dimensional/methods , Stereolithography , Models, Dental , Dental Prosthesis Design
10.
BMC Oral Health ; 24(1): 871, 2024 Aug 01.
Article in English | MEDLINE | ID: mdl-39090743

ABSTRACT

BACKGROUND: The aim of this research was to analyse the current literature on displaced dental implants in the mandibular body, including local and systemic variables related to their cause, and to identify the most frequent location. METHODS: The study conducted a search of three databases (Pubmed, Scopus, and Web of Science) using specific index terms such as 'dental implant', 'displacement', 'dislocation', 'displaced', and 'mandible'. The analysis focused on the direction of displacement and the characteristics of the bone tissue (bone quality, density, and quantity) in cases where dental implants were displaced. RESULTS: A total of 371 articles were obtained. Thirteen of these articles were selected and read in full. To define bone quality, the Lekholm and Zarb classification, modified by Rosas et al., was used. The type II-B bone, which is characterized by thick cortical bone surrounding cancellous bone with extremely wide medullary spaces, presented the largest number of complications. Twenty-two cases were found in which the displacement direction was horizontal. Of these, four were displaced vestibularly, fourteen lingually, and four remained in the center. Additionally, 24 cases presented vertical displacement, with 12 displaced towards the inferior border of the mandible, 9 towards the middle or adjacent to the inferior dental nerve canal, and 3 above the inferior dental nerve canal. CONCLUSION: The accidental displacement of implants within the mandibular body is associated with various risk factors, including the characteristics of the bony trabeculum and the size of the medullary spaces. It is reasonable to suggest that only an adequate pre-surgical diagnostic evaluation, with the help of high-resolution tomographic images that allow a previous evaluation of these structures, will help to have better control over the other factors, thus minimizing the risk of displacement.


Subject(s)
Dental Implants , Mandible , Humans , Dental Implants/adverse effects , Mandible/diagnostic imaging , Risk Factors , Foreign-Body Migration/prevention & control , Foreign-Body Migration/etiology , Bone Density , Dental Restoration Failure
11.
BMC Oral Health ; 24(1): 902, 2024 Aug 06.
Article in English | MEDLINE | ID: mdl-39107737

ABSTRACT

BACKGROUND: Long-term success of implant restoration depends on many factors one of them is the sufficient implant stability which is lowered in compromised bone density sites such as the maxilla as it is categorized as type III & IV bone, so searching for a new innovation and updates in implant material and features is very mandatory. So, the aim of this study was to compare between two implant materials (roxolid and traditional titanium) on the primary and secondary stability of implant retained maxillary overdenture. METHODS: Eighteen completely edentulous patients were selected. All patients received maxillary implant-retained overdentures and lower complete dentures; patients were divided equally into two groups according to the type of implant materials. Group A received a total number of 36 implants made of roxolid material and Group B received a total number of 36 implants made of traditional titanium alloys. Implant stability was assessed using ostell device, the primary implant stability was measured at the day of implant installation however, secondary implant stability was measured after six weeks of implant placement. Paired t-test was used to compare between primary and secondary stability in the same group and an independent t-test was used to compare between the two groups with a significant level < 0.05. RESULTS: Independent t-test revealed a significant difference between the two groups with p -value = 0.0141 regarding primary stability and p-value < 0.001 regarding secondary stability, as roxolid implant group was statistically higher stability than titanium group in both. Paired t- test showed a statistically significant difference in roxolid implant group with p-value = 0.0122 however, there was non-statistically significant difference in titanium group with p-value = 0.636. Mann Whitney test showed a significant difference between the two groups regarding amount of change in stability with p value = 0.191. roxolid implant group showed a higher amount of change in stability than the titanium implant group. CONCLUSION: Within the limitation of this study, it could be concluded that: Roxolid implants showed promising results regarding primary and secondary stability compared to conventional Titanium implants and can be a better alternative in implant retained maxillary overdentures. TRIAL REGISTRATION: Retrospectively NCT06334770 at 26-3-2024.


Subject(s)
Dental Prosthesis, Implant-Supported , Denture, Overlay , Maxilla , Titanium , Humans , Male , Female , Maxilla/surgery , Middle Aged , Dental Implants , Dental Alloys/chemistry , Aged , Zirconium , Denture Retention , Dental Materials/chemistry , Alloys
12.
BMC Oral Health ; 24(1): 901, 2024 Aug 06.
Article in English | MEDLINE | ID: mdl-39107754

ABSTRACT

BACKGROUND: Mechanical complications affect the stability of implant restorations and are a key concern for clinicians, especially with the frequent introduction of new implant designs featuring various structures and materials. This study evaluated the effect of different prosthetic index structure types and implant materials on the stress distribution of implant restorations using both in silico and in vitro methods. METHODS: Four finite element analysis (FEA) models of implant restorations were created, incorporating two prosthetic index structures (cross-fit (CF) and torc-fit (TF)) and two implant materials (titanium and titanium-zirconium). A static load was applied to each group. An in vitro study using digital image correlation (DIC) with a research scenario identical to that of the FEA was conducted for validation. The primary strain, sensitivity index, and equivalent von Mises stress were used to evaluate the outcomes. RESULTS: Changing the implant material from titanium to titanium-zirconium did not significantly affect the stress distribution or maximum stress value of other components, except for the implant itself. In the CF group, implants with a lower elastic modulus increased the stress on the screw. The TF group showed better stress distribution on the abutment and a lower stress value on the screw. The TF group demonstrated similar sensitivity for all components. DIC analysis revealed significant differences between TF-TiZr and CF-Ti in terms of the maximum (P < 0.001) and minimum principal strains (P < 0.05) on the implants and the minimum principal strains on the investment materials in both groups (P < 0.001). CONCLUSIONS: Changes in the implant material significantly affected the maximum stress of the implant. The TF group exhibited better structural integrity and reliability.


Subject(s)
Dental Implants , Dental Materials , Dental Stress Analysis , Finite Element Analysis , Titanium , Zirconium , Zirconium/chemistry , Humans , Dental Materials/chemistry , Dental Stress Analysis/methods , Stress, Mechanical , Dental Prosthesis Design , Elastic Modulus , Computer Simulation , Imaging, Three-Dimensional
13.
F1000Res ; 13: 281, 2024.
Article in English | MEDLINE | ID: mdl-39149510

ABSTRACT

Introduction: Osseointegration stands as a pivotal concept within the realm of dental implants, signifying the intricate process through which a dental implant integrates with the adjoining bone tissue. Graphene oxide (GO) has been shown to promote osseointegration, the process by which the implant fuses with the surrounding bone. The objective of this study was to assess the osseointegrative and antimicrobial properties of GO nano coated dental implants. Methods: A systematic search was conducted using electronic databases (e.g., PubMed, Scopus, Web of Science) to identify relevant studies published. Inclusion criteria encompassed studies that evaluated the effects of GO nano coating on osseointegrative and antimicrobial characteristics of dental implants. Studies not written in English and published before 2012 were excluded. Results: The initial search yielded a total of 127 potential studies, of which six met the inclusion criteria and five were included in the review. These studies provided data on GO nano coated dental implants and their osseointegrative and antimicrobial properties. All the included studies showed moderate risk of bias. None of the studies provided information related to sample size calculation or sampling technique. Discussion: The findings from the included studies demonstrated that GO nano coating had a positive impact on osseointegrative properties of dental implants. Enhanced bone-implant contact and increased bone density were observed in animals and humans receiving GO nano coated implants. Furthermore, the antimicrobial properties of GO nano coating were found to inhibit bacterial colonization and biofilm formation on the implant surface, reducing the risk of implant-associated infections. Conclusion: The findings indicate that GO nano coating holds promise in enhancing the success rate and longevity of dental implants. However, more studies with larger sample sizes, are needed to further strengthen the evidence and determine the long-term effects of GO nano coated dental implants.


Subject(s)
Anti-Infective Agents , Coated Materials, Biocompatible , Dental Implants , Graphite , Osseointegration , Graphite/chemistry , Graphite/pharmacology , Dental Implants/microbiology , Osseointegration/drug effects , Humans , Coated Materials, Biocompatible/pharmacology , Coated Materials, Biocompatible/chemistry , Anti-Infective Agents/pharmacology , Animals , Nanostructures
15.
BMC Oral Health ; 24(1): 914, 2024 Aug 08.
Article in English | MEDLINE | ID: mdl-39118020

ABSTRACT

BACKGROUND: Hyoid bone is attached to the mandible, tongue, larynx, temporal bone, and cervical spine via different types of muscles or ligaments. The tongue, mandible, and hyoid system play a crucial role in swallowing function. This within subject study aimed to evaluate the impact of mandibular implant overdentures on the displacement of the hyoid bones during the swallowing process. METHODS: Twenty five healthy edentulous subjects were selected for participating in the study. New complete dentures were constructed for all the participants. Subsequently two dental implants were inserted in the canine regions of the participant's mandibular arch. In order to retain the mandibular prosthesis in place, ball attachments were incorporated into the mandibular dentures to convert them into implant overdentures. Using 10 ml of thin liquid bolus, videofluoroscopy swallowing examination was performed in three different oral conditions: without complete dentures (WCD), with complete denture (CDs), and with a mandibular implant overdenture (IODs). ANOVA with Bonferroni test was used to analyze the data in order to determine how the hyoid displacement varied throughout different oral conditions. RESULTS: Compared to complete dentures, mandibular implant overdentures showed a significant decrease (P < 0.05) in both anterior hyoid displacement and duration of hyoid maximum anterior excursion (DOHMAE). However, there was a non-significant difference (P > 0.05) between the two oral circumstances in terms of superior hyoid displacement or duration for hyoid maximum elevation (DOHME). There is no penetration or aspiration for both complete denture and implant overdenture oral conditions. CONCLUSION: Implant retained overdentures have a positive effect on hyoid displacement during swallowing of thin liquid bolus consistency relative to conventional complete dentures. TRIAL REGISTRATION: Retrospectively registered (NCT06187181) 02/1/2024.


Subject(s)
Deglutition , Denture, Overlay , Hyoid Bone , Mouth, Edentulous , Humans , Deglutition/physiology , Male , Female , Mouth, Edentulous/physiopathology , Mouth, Edentulous/rehabilitation , Middle Aged , Aged , Mandible , Fluoroscopy , Dental Prosthesis, Implant-Supported , Dental Implants , Jaw, Edentulous/rehabilitation , Jaw, Edentulous/physiopathology
16.
BMC Vet Res ; 20(1): 353, 2024 Aug 08.
Article in English | MEDLINE | ID: mdl-39118061

ABSTRACT

In recent years, dental implants have become a trend in the treatment of human patients with missing teeth, which may also be an acceptable method for companion animal dentistry. However, there is a gap challenge in determining appropriate implant sizes for different dog breeds and human. In this study, we utilized skull computed tomography data to create three-dimensional models of the mandibles of dogs in different sizes. Subsequently, implants of various sizes were designed and subjected to biomechanical finite element analysis to determine the optimal implant size. Regression models were developed, exploring the relationship between the average weight of dogs and the size of premolar implants. Our results illustrated that the regression equations for mean body weight (x, kg) and second premolar (PM2), third premolar (PM3), and fourth premolar (PM4) implant length (y, mm) in dogs were: y = 0.2785x + 7.8209, y = 0.2544x + 8.9285, and y = 0.2668x + 10.652, respectively; the premolar implant diameter (mm) y = 0.0454x + 3.3506, which may provide a reference for determine suitable clinical implant sizes for dogs.


Subject(s)
Bicuspid , Dental Implants , Finite Element Analysis , Mandible , Animals , Dogs , Tomography, X-Ray Computed/veterinary , Dental Implantation/methods , Dental Implantation/veterinary , Male , Female , Forecasting
17.
BMC Oral Health ; 24(1): 916, 2024 Aug 08.
Article in English | MEDLINE | ID: mdl-39118095

ABSTRACT

BACKGROUND: The posterior maxilla presents challenges for implant insertion because of the poor bone quality as well as the loss of vertical bone height. Indirect transcrestal sinus lift techniques are advised when a few millimeters of additional height are needed. This study aimed to evaluate the clinical and radiographic outcomes of antral membrane balloon technique versus Densah burs for transcrestal maxillary sinus lifting with simultaneous implant placement. MATERIALS AND METHODS: This randomized clinical trial was conducted on 22 patients received 32 dental implants for replacement of missed maxillary posterior teeth after crestal maxillary sinus lifting. The patients were randomly divided into two groups. Group 1, patients underwent crestal sinus floor elevation with simultaneous implant placement using antral membrane balloon technique. Group 2, patients underwent crestal sinus floor elevation with simultaneous implant placement using Densah burs. Patients were evaluated clinically and radiographically using cone beam computed tomography (CBCT) at regular time intervals immediately, 6 months and 12 months after surgery. All clinical and radiographic parameters were statistically analyzed. RESULTS: All dental implants were successful for 12 months of follow up. Regarding implant primary stability, there was a statistical significant difference between the study groups in favor of Densah group (P = 0.004), while there was no significant difference after 6 months (P = 0.07). Radiographically, balloon group showed a statistically significant immediate postoperative vertical bone height (P < 0.0001), and significant reduction in vertical bone height after 6 months (P < 0.0001). Densah group showed significant increase in bone density (P ≤ 0.05). CONCLUSION: Both techniques demonstrated successful clinical and radiographic outcomes for crestal sinus lift. The antral membrane balloon group demonstrated better immediate postoperative vertical bone gain, while Densah burs had higher implant primary stability and bone density. TRIAL REGISTRATION: This study was registered in Clinical-Trials.gov PRS ( https://register. CLINICALTRIALS: gov ) under identification number NCT05922592 on 28/06/2023.


Subject(s)
Cone-Beam Computed Tomography , Sinus Floor Augmentation , Humans , Sinus Floor Augmentation/methods , Male , Female , Middle Aged , Dental Implantation, Endosseous/methods , Adult , Treatment Outcome , Maxillary Sinus/surgery , Maxillary Sinus/diagnostic imaging , Dental Implants , Maxilla/surgery , Maxilla/diagnostic imaging , Follow-Up Studies
18.
Br Dent J ; 237(3): 200, 2024 Aug.
Article in English | MEDLINE | ID: mdl-39123026
19.
Br Dent J ; 237(3): 227, 2024 Aug.
Article in English | MEDLINE | ID: mdl-39123045
20.
Swiss Dent J ; 134(3): 100-112, 2024 Aug 14.
Article in German | MEDLINE | ID: mdl-39138978

ABSTRACT

Die Magnetresonanztomographie hat in den letzten Jahren durch zahlreiche technische Fortschritte vielversprechende Ansätze in der dentomaxillofazialen Radiologie eröffnet. Die MRT hat das Potenzial, zu einer innovativen Methode für die präzise Diagnose und Planung von Zahnimplantaten zu werden, da sie die gleichzeitige Darstellung von Weich- und Hartgewebe ermöglicht und keine Strahlenbelastung für die Patienten mit sich bringt. Die dentale MRT fungiert bereits heute als eine sinnvolle Ergänzung zu konventionellen röntgenbasierten bildgebenden Verfahren und kann dazu beitragen, die mit chirurgischen Eingriffen verbundenen Risiken durch die Optimierung bestehender Therapieprotokolle weiter zu minimieren. Vor dem Hintergrund aktueller Bestrebungen in der Zahnmedizin eine personalisierte orale Diagnostik unter Berücksichtigung patientenspezifischer Faktoren zu ermöglichen, gibt dieser Artikel einen kompakten Überblick über die Möglichkeiten der dentalen MRT in der Implantatchirurgie. Insgesamt verdeutlichen die vorgestellten Anwendungen unter Berücksichtigung der sequenzspezifischen Indikationen und Limitationen das Potenzial der dentalen MRT für die personalisierte implantologische Therapieplanung. Sie ermöglicht die Berücksichtigung von Parametern, die mit konventionellen bildgebenden Verfahren nicht dargestellt werden können, und ist insbesondere nützlich für die Beurteilung chirurgisch relevanter Parameter, die das Weichgewebe betreffen.


Subject(s)
Magnetic Resonance Imaging , Humans , Magnetic Resonance Imaging/methods , Dental Implantation, Endosseous/methods , Dental Implants , Patient Care Planning
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