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International Journal of Implant... Jun 2024This propensity score matching, multicenter, cross-sectional study was performed to examine the effects of various prosthetic methods for dental clinic outpatients with...
Effects of various prosthetic methods for patients with Kennedy Class I partial edentulism on oral hypofunction, subjective symptoms, and oral health-related quality of life.
PURPOSE
This propensity score matching, multicenter, cross-sectional study was performed to examine the effects of various prosthetic methods for dental clinic outpatients with Kennedy Class I partial edentulism (KCIPE) on oral hypofunction, subjective frailty symptoms, and oral health-related quality of life (QOL).
METHODS
Patients (n = 348) were classified into the following three groups for analysis: NT, patients with natural dentition providing intermaxillary contact in four occlusal supporting zones; RPD, patients with KCIPE who received removable partial dentures; and ISFP, patients with KCIPE who received implant-supported fixed prostheses. Participants' basic characteristics were recorded, and oral function tests were conducted. Subjective symptoms of physical and oral frailty were investigated via questionnaire. Oral health-related QOL was assessed using the Japanese short version of the Oral Health Impact Profile (OHIP-JP16). Propensity score matching was performed to adjust for patient background factors that could influence oral hypofunction in each group.
RESULTS
Compared with the ISFP group, the RPD group had significantly higher rates of poor oral hygiene, reduced occlusal force, decreased masticatory function, and declines in swallowing function and oral hypofunction; the odds ratio for oral hypofunction was 4.67. Compared with the ISFP group, the RPD group had significantly greater subjective symptoms of physical frailty and oral frailty, as well as higher OHIP scores.
CONCLUSIONS
Prosthetic treatment of KCIPE affected oral hypofunction, subjective frailty symptoms, and oral health-related QOL in dental clinic outpatients.
Topics: Humans; Quality of Life; Cross-Sectional Studies; Male; Female; Middle Aged; Oral Health; Jaw, Edentulous, Partially; Denture, Partial, Removable; Aged; Surveys and Questionnaires; Propensity Score; Dental Prosthesis, Implant-Supported; Denture, Partial, Fixed; Adult
PubMed: 38935335
DOI: 10.1186/s40729-024-00555-w -
Indian Journal of Dental Research :... Jan 2024This case report outlines a novel prosthodontic approach for managing a broken screw inside an implant screw channel, emphasising the importance of innovative solutions...
RATIONALE
This case report outlines a novel prosthodontic approach for managing a broken screw inside an implant screw channel, emphasising the importance of innovative solutions in implant dentistry.
PATIENT CONCERNS
A 57-year-old male patient sought restoration for implant-supported crowns (#46 and #47). A broken screw inside the implant screw channel posed a significant concern for both the patient and the dental team.
TREATMENT
Utilising an impression pickup technique of the inner surface of the implant body, a custom titanium abutment was fabricated in the laboratory and restoration was successfully replaced. A follow-up of 6 months was performed, ensuring optimal function and patient satisfaction.
OUTCOME
The custom titanium abutment with a zirconia crown was placed, leading to a successful restoration. The patient reported no discomfort, demonstrating improved function and aesthetics.
TAKEAWAY LESSON
This case highlights the effectiveness of tailored prosthodontic interventions in addressing complex implant-related complications.
Topics: Humans; Male; Middle Aged; Crowns; Dental Prosthesis, Implant-Supported; Dental Implants; Dental Implant-Abutment Design; Dental Restoration Failure; Zirconium; Titanium; Dental Abutments
PubMed: 38934762
DOI: 10.4103/ijdr.ijdr_953_23 -
Indian Journal of Dental Research :... Jan 2024To comparatively evaluate the effect of normal saline gel and ozonated saline-ozonated gel (ozone therapy) on pain, inflammation, soft tissue, and crestal bone loss in... (Randomized Controlled Trial)
Randomized Controlled Trial Comparative Study
AIMS
To comparatively evaluate the effect of normal saline gel and ozonated saline-ozonated gel (ozone therapy) on pain, inflammation, soft tissue, and crestal bone loss in dental implant surgery.
METHODS AND MATERIAL
Forty adult patients scheduled to undergo implant were randomized into two groups: Twenty patients (n = 20) received ozone therapy and controls (n = 20) received normal saline and gel during implant placement. Inflammation and pain were noted at days 1 and 7 and 3 month intervals by estimating C-reactive protein (CRP) levels and assessing visual analogue scale (VAS) scores. At 3 months, soft tissue outcomes were noted in terms of plaque index, gingival index, and pocket depth, while crestal bone loss was noted via a radiograph.
RESULTS
Mean CRP levels were significantly higher in the control group as compared to that in the case group on day 1 and day 7 follow-ups (P < 0.05). Mean VAS scores for pain were also lower in the case group as compared to the control group at all follow-ups, but the difference was significant statistically only at day 1 (P = 0.061). The plaque index was significantly lower in the case group as compared to the control group (P = 0.011) at final follow-up. No significant difference between two groups was observed for crestal bone loss.
CONCLUSIONS
Ozone therapy during implant placement was effective in reduction of pain, systemic inflammation, and plaque deposition in dental implant patients.
Topics: Humans; Ozone; Gels; Male; Female; Adult; Middle Aged; C-Reactive Protein; Saline Solution; Dental Implants; Dental Plaque Index; Alveolar Bone Loss; Periodontal Index; Pain Measurement; Dental Implantation; Inflammation
PubMed: 38934740
DOI: 10.4103/ijdr.ijdr_591_23 -
Indian Journal of Dental Research :... Jan 2024
Topics: Humans; Dental Implants; Robotics; Robotic Surgical Procedures; Dental Implantation, Endosseous
PubMed: 38934739
DOI: 10.4103/ijdr.ijdr_358_24 -
Case Reports in Dentistry 2024Bone resorption following tooth loss might compromise retention, stability, and support of conventional removable prostheses, and for this reason, implant-supported...
Bone resorption following tooth loss might compromise retention, stability, and support of conventional removable prostheses, and for this reason, implant-supported overdentures are suggested as a viable alternative for completely edentulous patients. Bars, telescopic attachments, or stud attachments have been used to provide retention through a different mechanism of action based on specific design characteristics. The purpose of this report is to thoroughly describe the applied protocol for the fabrication of an implant overdenture supported by two bars incorporating stud attachments. A 67-year-old male patient presented to the Postgraduate Clinic of the National and Kapodistrian University in Athens seeking dental rehabilitation. The remaining teeth were characterized with poor prognosis, mainly due to their periodontal status. The proposed treatment plan included the placement of four implants in the maxilla and two implants in the mandible and the fabrication of implant-supported overdentures. The diagnostic stages revealed adequate prosthetic space that would enable the fabrication of a bar substructure for the maxillary overdenture. To combine the benefits of bars and stud attachments, two bars with four attachments were fabricated. Evaluation of the delivered prosthesis revealed adequate retention, support, and stability achieved with minimal palatal coverage. Patient's reported satisfaction and quality of life were increased. Recall appointments at one, six, and twelve months did not reveal any adverse effects or patient's complaints. According to the present case report, different types of attachments may be used after careful study of each case. More studies are needed to report on different aspects of the chosen treatment plan.
PubMed: 38933360
DOI: 10.1155/2024/2818034 -
Pharmaceutics Jun 2024Despite the high success rates of dental implants, peri-implantitis is currently the most common complication in dental implantology. Peri-implantitis has an... (Review)
Review
Despite the high success rates of dental implants, peri-implantitis is currently the most common complication in dental implantology. Peri-implantitis has an inflammatory nature, it is associated with the accumulation of plaque in the peri-implant tissues, and its evolution can be progressive depending on various factors, comorbidities, and poor oral health. Prophylaxis and different treatment methods have been widely discussed in recent decades, and surgical and non-surgical techniques present both advantages and disadvantages. In this work, a literature review of different studies on the application of adjuvant treatments, such as local and systemic antibiotics and antiseptic treatments, was conducted. Positive outcomes have been found in the short (up to one year after treatment) and long term (up to ten years after treatment) with combined therapies. However, there is still a need to explore new therapies based on the use of advanced drug delivery systems for the effective treatment of peri-implantitis in the long term and without relapses. Hence, micro- and nanoparticles, implants, and injectable hydrogels, among others, should be considered in future peri-implantitis treatment with the aim of enhancing overall therapy outcomes.
PubMed: 38931890
DOI: 10.3390/pharmaceutics16060769 -
Microorganisms Jun 2024Understanding the microbiological profiles of peri-implant conditions is crucial for developing effective preventive and therapeutic strategies. This narrative review... (Review)
Review
Understanding the microbiological profiles of peri-implant conditions is crucial for developing effective preventive and therapeutic strategies. This narrative review analyzes the microbial profiles associated with healthy peri-implant sites, peri-implant mucositis, and peri-implantitis, along with related microbiological sampling and analyses. Healthy peri-implant sites are predominantly colonized by , , , and species, in addition to Gram-positive cocci and facultatively anaerobic rods, forming a stable community that prevents pathogenic colonization and maintains microbial balance. In contrast, peri-implant mucositis shows increased microbial diversity, including both health-associated and pathogenic bacteria such as red and orange complex bacteria, contributing to early tissue inflammation. Peri-implantitis is characterized by even greater microbial diversity and a complex pathogenic biofilm. Predominant pathogens include , , , , and unique species like and . Additionally, less common species such as and , contributing to disease progression through biofilm formation and increased inflammatory response, along with and human cytomegalovirus with a still not defined role, and contribute to disease progression through biofilm formation, immune modulation, and synergistic inter-kingdom interactions. Future research should standardize diagnostic criteria, employ advanced molecular techniques, integrate microbial data with clinical factors, and highlight inter-kingdom interactions.
PubMed: 38930519
DOI: 10.3390/microorganisms12061137 -
Materials (Basel, Switzerland) Jun 2024Implantoplasty is a technique increasingly used to remove the biofilm that causes peri-implantitis on dental implants. This technique of mechanization of the titanium...
Implantoplasty is a technique increasingly used to remove the biofilm that causes peri-implantitis on dental implants. This technique of mechanization of the titanium surface makes it possible to eliminate bacterial colonies, but it can generate variations in the properties of the implant. These variations, especially those in fatigue resistance and electrochemical corrosion behavior, have not been studied much. In this work, fatigue tests were performed on 60 dental implants without implantoplasty, namely 30 in air and 30 in Hank's solution at 37 °C, and 60 with implatoplasty, namely 30 in air and 30 in Hank's solution at 37 °C, using triaxial tension-compression and torsion stresses simulating human chewing. Mechanical tests were performed with a Bionix servo-hydraulic testing machine and fracture surfaces were studied by scanning electron microcopyElectrochemical corrosion tests were performed on 20 dental implants to determine the corrosion potentials and corrosion intensity for control implants and implantoplasty implants. Studies of titanium ion release to the physiological medium were carried out for each type of dental implants by Inductively Coupled-Plasma Mass Spectrometry at different immersion times at 37 °C. The results show a loss of fatigue caused by the implantoplasty of 30%, observing that the nucleation points of the cracks are in the areas of high deformation in the areas of the implant neck where the mechanization produced in the treatment of the implantoplasty causes an exaltation of fatigue cracks. It has been observed that tests performed in Hank's solution reduce the fatigue life due to the incorporation of hydrogen in the titanium causing the formation of hydrides that embrittle the dental implant. Likewise, the implantoplasty causes a reduction of the corrosion resistance with some pitting on the machined surface. Ion release analyses are slightly higher in the implantoplasted samples but do not show statistically significant differences. It has been observed that the physiological environment reduces the fatigue life of the implants due to the penetration of hydrogen into the titanium forming titanium hydrides which embrittle the implant. These results should be taken into account by clinicians to determine the convenience of performing a treatment such as implantoplasty that reduces the mechanical behavior and increases the chemical degradation of the titanium dental implant.
PubMed: 38930312
DOI: 10.3390/ma17122944 -
Materials (Basel, Switzerland) Jun 2024Direct scanning of silicone impressions is a valid technique. However, studies in implant-supported rehabilitations are lacking. This in vitro study aims to compare the...
Direct scanning of silicone impressions is a valid technique. However, studies in implant-supported rehabilitations are lacking. This in vitro study aims to compare the trueness of impressions obtained with two types of silicone and their corresponding stone casts, using two laboratory scanners in a full-arch implant rehabilitation. A master cast with six dental implants was scanned with a 12-megapixel scanner to obtain a digital master cast. Ten implant impressions were made using two silicones (Zhermack and Coltene) with the open-tray technique. The impressions and stone casts were scanned by two extraoral scanners (Identica T500, Medit; and S600 ARTI, Zirkonzhan). Trueness was assessed by comparing linear and angular distances in digital casts with the master cast. A < 0.05 significance level was considered. The results showed that for the linear measurements, 72% were higher than the master cast measurements, and no consistent pattern was observed in the angular measurements. The greatest deviations were detected between the most posterior implants, with mean values ranging between 173 and 314 µm. No significant differences were found between scanners. However, differences were observed in the distances between silicones (46.7%) and between impressions and stone casts (73.3%). This work demonstrates that the direct scanning of silicone impressions yields results comparable to those obtained from scanning gypsum casts in full-arch implant-supported rehabilitation.
PubMed: 38930301
DOI: 10.3390/ma17122932 -
Materials (Basel, Switzerland) Jun 2024This paper reports the results of our study on electrochemical polishing of titanium and a Ti-based alloy using non-aqueous electrolyte. It was shown that...
This paper reports the results of our study on electrochemical polishing of titanium and a Ti-based alloy using non-aqueous electrolyte. It was shown that electropolishing ensured the removal of surface defects, thereby providing surface smoothing and decreasing surface roughness. The research was conducted using samples made of titanium and TiAlV alloy, as well as implant system elements: implant analog, multiunit, and healing screw. Electropolishing was carried out under a constant voltage (10-15 V) with a specified current density. The electrolyte used contained methanol and sulfuric acid. The modified surface was subjected to a thorough analysis regarding its surface morphology, chemical composition, and physicochemical properties. Scanning electron microscope images and profilometer tests of roughness confirmed significantly smoother surfaces after electropolishing. The surface profile analysis of processed samples also yielded satisfactory results, showing less imperfections than before modification. The EDX spectra showed that electropolishing does not have significant influence on the chemical composition of the samples.
PubMed: 38930203
DOI: 10.3390/ma17122832