-
Special Care in Dentistry : Official... 2023The dentist participates in the treatment protocol for craniofacial anomalies in individuals from the first months of life.
INTRODUCTION
The dentist participates in the treatment protocol for craniofacial anomalies in individuals from the first months of life.
OBJECTIVE
to compare in a retrospective cohort study the morphometry of the edentulous palate of children microcephaly associated with congenital Zika syndrome (CZS), unilateral complete cleft lip and alveolus (UCL), and without craniofacial anomalies.
METHODS
Forty-five digitized dental molds composed the sample divided into three groups: CZS; UCL; and without craniofacial anomalies (control group). The following measurements were evaluated: intercanine and intertuberosity distances; dental arch length, area, volume, and mismatch superimposition. Parametric and non-parametric tests were applied (α = 5%).
RESULTS
CZS group showed the smallest means of intercanine distance and area than those of the other groups (p = .001 and p = .010, respectively). The dental arch length was greater in the CZS group than in the control group (p = .020). The evaluation of the mismatch superimposition showed that the CZS group had the lowest means of maximum distance and root mean square than that of the UCL group (p = .025 and p = .005, respectively).
CONCLUSION
CZS participants tended to palatal narrowing, while UCL individuals had parameters similar to those of the control group, despite the alveolus defect.
PubMed: 36529535
DOI: 10.1111/scd.12800 -
Dentistry Journal Oct 2023In dental implantology, alveolar ridge preservation (ARP) has emerged as a standard technique to address dimensional changes that affect alveolar ridge morphology... (Review)
Review
In dental implantology, alveolar ridge preservation (ARP) has emerged as a standard technique to address dimensional changes that affect alveolar ridge morphology following tooth loss. Various alternative graft materials, including xenografts, alloplasts, and allografts, have been effectively employed in fresh extraction sites for ARP. Current evidence suggests that these materials primarily serve as bio-scaffolds, which are slowly incorporated, thus necessitating a waiting period of at least 4-6 months before implant placement. Consequently, the ARP technique extends the overall duration of implant treatment by several months. Recently, the incorporation of a form of autologous platelet concentrate, known as platelet-rich fibrin (PRF), has been advocated in conjunction with ARP as a method of bioenhancement of soft- and hard-tissue healing and regeneration. PRF contains platelet-derived growth factors, hormones, and bioactive components like cytokines that have demonstrated the ability to stimulate angiogenesis and tissue regeneration throughout all phases of wound healing. Additionally, the concentration of leukocytes present in the PRF matrix plays a vital role in tissue healing and regeneration as part of the osteoimmune response. The reported advantages of incorporating autogenous PRF platelet concentrates during ARP encompass reduced healing time, improved angiogenesis and bone regeneration, socket sealing through the fibrin matrix, antibacterial properties, and decreased post-extraction pain and infection risk. Therefore, the objective of this paper is to review the existing evidence regarding the application of PRF in alveolar ridge preservation (ARP) following tooth extraction. Two clinical case studies are presented, wherein ARP was enhanced with PRF, followed by implant placement within a relatively short period of 8 weeks. These cases serve as further proof of concept for supporting the adjuvant use of PRF to enhance healing and accelerate implant placement after ARP.
PubMed: 37886929
DOI: 10.3390/dj11100244 -
Minerva Dental and Oral Science Jul 2024Oral cancer is a serious health issue in both the developing and developed worlds, and it is one of the most common forms of cancer of the head and neck. In accordance...
BACKGROUND
Oral cancer is a serious health issue in both the developing and developed worlds, and it is one of the most common forms of cancer of the head and neck. In accordance with the 2017 World Health Organization classification, oral cancer can affect any part of the mouth, including the buccal mucosa, the front two-thirds of the tongue, the lip, the palate, the vestibule, the alveolus, the floor of the mouth, and the gingivae. Hematology and electrolyte balance have been proposed as tumor indicators and paths into cancer's genesis. Examining the patient's blood count and electrolyte levels in order to better understand their oral cancer.
METHODS
Electrolyte abnormalities are common in cancer patients and may be caused by the disease itself or by treatment. Hyponatremia is the most frequent electrolyte problem in cancer patients, and it is typically caused by the syndrome of improper ADH secretion. Although electrolyte problems are associated with a worse prognosis for cancer patients, timely and effective therapy has the potential to enhance both short- and long-term results and quality of life. Hematological tests on patients with oral cancer, including differential cell count, white blood cell count, and hemoglobin level.
RESULTS
Compared to healthy controls, oral cancer patients show statistically significant differences in a number of biochemical parameters, including electrolytes (sodium, P<0.05; potassium, P=0.89; chloride, P<0.05); differential count (neutrophils, P<0.05; basophils, P<0.05). A significant risk factor for cancer patients is an electrolyte imbalance, which has been linked to inappropriate anti-diabetic hormone release.
CONCLUSIONS
Clinicians will find these shifts in electrolytic level helpful in diagnosing and tracking oral cancer. Potentially malignant oral disorders and Oral squamous cell carcinoma may be better predicted using a combination of TLC, neutrophil, and lymphocyte counts, as shown in this study.
PubMed: 38953794
DOI: 10.23736/S2724-6329.24.04902-7 -
Journal of Cellular Physiology Jan 2024Lipid biosynthesis is recently studied its functions in a range of cellular physiology including differentiation and regeneration. However, it still remains to be...
Lipid biosynthesis is recently studied its functions in a range of cellular physiology including differentiation and regeneration. However, it still remains to be elucidated in its precise function. To reveal this, we evaluated the roles of lysophosphatidic acid (LPA) signaling in alveolar bone formation using the LPA type 2 receptor (LPAR2) antagonist AMG-35 (Amgen Compound 35) using tooth loss without periodontal disease model which would be caused by trauma and usually requires a dental implant to restore masticatory function. In this study, in vitro cell culture experiments in osteoblasts and periodontal ligament fibroblasts revealed cell type-specific responses, with AMG-35 modulating osteogenic differentiation in osteoblasts in vitro. To confirm the in vivo results, we employed a mouse model of tooth loss without periodontal disease. Five to 10 days after tooth extraction, AMG-35 facilitated bone formation in the tooth root socket as measured by immunohistochemistry for differentiation markers KI67, Osteocalcin, Periostin, RUNX2, transforming growth factor beta 1 (TGF-β1) and SMAD2/3. The increased expression and the localization of these proteins suggest that AMG-35 elicits osteoblast differentiation through TGF-β1 and SMAD2/3 signaling. These results indicate that LPAR2/TGF-β1/SMAD2/3 represents a new signaling pathway in alveolar bone formation and that local application of AMG-35 in traumatic tooth loss can be used to facilitate bone regeneration and healing for further clinical treatment.
Topics: Animals; Mice; Cell Differentiation; Lysophospholipids; Osteoblasts; Osteogenesis; Periodontal Ligament; Tooth Loss; Transforming Growth Factor beta1; Receptors, Lysophospholipid
PubMed: 38149778
DOI: 10.1002/jcp.31148 -
Clinical Oral Investigations Aug 2023Extraction of impacted mandibular third molars (IMTMs) is the most common surgery performed in the Department of Oral and Maxillofacial Surgery. Inferior alveolar nerve...
OBJECTIVES
Extraction of impacted mandibular third molars (IMTMs) is the most common surgery performed in the Department of Oral and Maxillofacial Surgery. Inferior alveolar nerve (IAN) injury is a rare but severe complication, and the risk is significantly higher in cases of IMTM near the inferior alveolar canal (IAC). The existing surgical method to extract such IMTMs is either not safe enough or is time-consuming. A better surgical design is needed.
MATERIALS AND METHODS
From August 2019 to June 2022, 23 patients underwent IMTM extraction by Dr. Zhao at Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, and were found to have IMTMs in close proximity to the IAC. Due to high IAN injury risk, these patients underwent coronectomy-miniscrew traction to extract their IMTMs.
RESULTS
The time between coronectomy-miniscrew insertion and complete removal of the IMTM was 32.65 ± 2.110 days, which was significantly shorter than that of traditional orthodontic traction. Two-point discrimination testing revealed no IAN injury, and no injury was reported by patients during follow-up. Other complications, such as severe swelling, severe bleeding, dry socket, and limited mouth opening, were not observed. Postoperative pain levels were not significantly higher in the coronectomy-miniscrew traction group than in the traditional IMTM extraction group.
CLINICAL RELEVANCE
For IMTMs that are in close proximity to the IAC and must be extracted, coronectomy-miniscrew traction is a novel approach to minimize the risk of IAN injury in a less time-consuming way with a lower possibility of complications.
Topics: Humans; Mandibular Canal; Molar, Third; Trigeminal Nerve Injuries; Tooth Extraction; Traction; Mandible; Tooth, Impacted; Mandibular Nerve
PubMed: 37326659
DOI: 10.1007/s00784-023-05044-9 -
Journal of Endodontics Sep 2023Cone-beam computed tomography (CBCT) allows three-dimensional evaluation and has high diagnostic accuracy of endodontic conditions. Considering that the most indicated...
INTRODUCTION
Cone-beam computed tomography (CBCT) allows three-dimensional evaluation and has high diagnostic accuracy of endodontic conditions. Considering that the most indicated protocol for endodontics should have smaller field-of-view and higher spatial resolution, a higher radiation dose may be associated. Thus, this study evaluated the accuracy of an optimized CBCT protocol for the detection of intraoperative endodontic complications.
METHODS
An image phantom was custom-made with a human mandible covered with Mix-D and forty mandibular first molars. The teeth were subdivided into 4 groups of endodontic complications which were simulated. All teeth were individually inserted into the left second molar socket of the phantom and CBCT images were acquired with OP 300 unit adjusted to a field-of-view of 6 × 4 cm, 90kVp, and 2 dose protocols: low and high. Furthermore, a titanium implant, a tooth with endodontic treatment, and a cobalt-chromium post were inserted into the empty sockets adjacent to the teeth of interest and additional images were acquired. Four endodontists evaluated the images and indicated the presence of endodontic complications on a 5-point scale. Sensitivity, specificity, and area under the receiver operating characteristic curve were obtained. The different groups were compared by ANOVA and Tukey tests (α = 0.05).
RESULTS
In most conditions, irrespective of the presence of metallic materials, the values of accuracy, sensitivity, specificity, and area under the receiver operating characteristic curve did not differ significantly (P > .05) between the dose protocols.
CONCLUSIONS
Optimized CBCT protocols should be considered for the detection of intraoperative endodontic Diagnostic complications.
Topics: Humans; Endodontics; Endodontists; ROC Curve; Cone-Beam Computed Tomography; Molar
PubMed: 37451335
DOI: 10.1016/j.joen.2023.07.006 -
The Cleft Palate-craniofacial Journal :... Sep 2023To assess parents' satisfaction with cleft child's facial appearance and function; compare these findings with orthodontist (expert) satisfaction and evaluate influence...
To assess parents' satisfaction with cleft child's facial appearance and function; compare these findings with orthodontist (expert) satisfaction and evaluate influence of various factors on satisfaction. Cross-sectional study. Sixty-three parents of non-syndromic patients with clefts (ages 7-20 years), and an orthodontist, completed the Cleft Hearing, Appearance and Speech Questionnaire. Two scores were produced: cleft-associated, and non-cleft-associated features. Additional open questions were presented to the parents. Both parents and orthodontist gave high satisfaction scores (mean: 8.4 & 8.2, respectively), significantly correlated, for the cleft-associated features ( < .001). Parents were least satisfied with appearance of teeth, then nose, then lips. Scores did not vary significantly with age and sex of patients. Higher parents' satisfaction was found in the unilateral cleft lip + alveolus (UCL + alveolus) group, compared with the unilateral cleft lip and palate (UCLP), regarding cleft-associated features, and compared with cleft palate (CP), regarding non-cleft-associated features ( < .05). Greater parents and orthodontist satisfaction were found when parents' education was >12 years. Parents of Jewish ethnicity showed higher satisfaction, compared with parents of non-Jewish ethnicity. Patients requiring future surgery received lower scores. Parents satisfaction was directly correlated to socioeconomic status. The following factors appear to lower parents' satisfaction: [1] cleft severity, [2] hearing or speech of CP/BCLP patients, [3] requirement for further surgery, and [4] low socioeconomic status. Severe cases may require additional explanation to parents in order to lower expectations. A more thorough explanation may be required in patients of lower socioeconomic status.
Topics: Child; Humans; Cleft Lip; Cleft Palate; Cross-Sectional Studies; Patient Satisfaction; Personal Satisfaction; Adolescent; Young Adult; Male; Female
PubMed: 35469455
DOI: 10.1177/10556656221093934 -
Medicina Oral, Patologia Oral Y Cirugia... Mar 2024Dental autotransplantation (DAT) is defined as the replacement or direct transfer of an impacted, semi-impacted or erupted tooth to a donor site, either to a...
BACKGROUND
Dental autotransplantation (DAT) is defined as the replacement or direct transfer of an impacted, semi-impacted or erupted tooth to a donor site, either to a post-extraction socket or to a surgically created socket within the same individual. The use of new technological advances, such as 3-D dental models based on computer-aided design, among others, have been reported to improve the success rate of DAT. Therefore, we aimed to perform a systematic review to explore the possible benefits that the use of these innovative techniques can provide when applied to DAT.
MATERIAL AND METHODS
The literature search was conducted in PubMed, Scopus, and Web of Science databases following the PRISMA guidelines. The research question was: "Are computerized technological advancements a useful tool for improving the success of third molar autotransplantation technique?
RESULTS
The initial literature search identified 195 articles, of which only 11 were included for qualitative analysis. All studies used 3D dental models based on computer-aided design data. Surgical guides and stereolithographic models were used by 4 and 1 study respectively. A total of 91 transplanted teeth were evaluated, out of which only 88 were considered within the parameters of clinical success (96.7%). Only 7 out of the 11 articles reported the specific autotransplanted tooth, being mandibular third molars the most prevalent autotransplanted teeth.
CONCLUSIONS
Although the application of new technologies for DAT increases the success rate of this technique, further primary studies are still needed to address long-term teeth survival rates and complications. The cost and availability to implement the integration of these techniques to DAT may be a variable to consider, as this can be a limitation for some patients or for low-income countries.
Topics: Humans; Autografts; Molar; Molar, Third; Tooth, Impacted; Transplantation, Autologous
PubMed: 37823295
DOI: 10.4317/medoral.26233 -
Biomedical Physics & Engineering Express Feb 2024Traumatic dental injuries can occur due to various reasons such as accidents, sports injuries, fights, falls, and others. These injuries can affect the teeth, gums, and...
Traumatic dental injuries can occur due to various reasons such as accidents, sports injuries, fights, falls, and others. These injuries can affect the teeth, gums, and surrounding tissues, and can range from minor chips and cracks to severe fractures, dislocations, and avulsions (when the tooth is completely knocked out of the socket). The most common way to address this is by replacing affected teeth with dental implants. The purpose of this research is to evaluate the use of composite materials in dental implants and compare them with the traditionally used materials using a patient specific cone beam computed tomography (CBCT) based finite element model (FEM). To conduct this research, two different implant groups i.e., traditional implant and composite implant were designed using Titanium grade 4, zirconium oxide-reinforced lithium silicate (ZLS), and Zirconia (ZrO). Six dental implants were designed namely Ti implant, ZLS implant, ZrOimplant, Ti-ZrOcomposite, Ti-ZLS composite, and ZLS-ZrOcomposite using 3D modelling software. Detailed full-scale 3D models of patient specific dental implant were developed and traumatic loading conditions were applied to the enamel of central incisor teeth or crown of dental implant, and maxilla was constrained in all directions. It was found that the use of composite materials for dental implants can reduce the stresses over the surface of abutment and implant as compared to traditional implants. The detailed models developed as a part of this study can advance the research on dental implants, and with further experimental validation allow the use of composite materials for fabrication of more stable dental implants.
Topics: Humans; Dental Implants; Finite Element Analysis; Software; Maxilla; Crowns; Zirconium
PubMed: 38350117
DOI: 10.1088/2057-1976/ad28ce -
Compendium of Continuing Education in... Oct 2023An alveolar ridge preservation (ARP) procedure is commonly performed to preserve ridge width and height for optimal dental implant placement. Mixing different sources of...
BACKGROUND
An alveolar ridge preservation (ARP) procedure is commonly performed to preserve ridge width and height for optimal dental implant placement. Mixing different sources of bone grafts may help maximize their properties to obtain predictable ARP results.
OBJECTIVE
The aim of this case series is to highlight the clinical and radiographic outcomes of a combined allograft and xenograft approach for a predictable ARP procedure.
MATERIALS AND METHODS
Eleven clinical cases that required tooth extraction and future implant placement were selected for this case series. All surgeries were performed by a single clinician in a private practice setting. All cases underwent an ARP procedure, which included atraumatic extraction, degranulation, assessment of the socket, and the use of a combination of allograft and xenograft fibers/granules in a 1:1 mixing approach. Based on the socket defect, either a type I or type III collagen membrane was used during the procedure. In all cases CBCT imaging was done prior to surgical implant placement, and digital implant planning was performed integrating interdisciplinary best practices. Implant placement was carried out using manufacturer's recommendations.
RESULTS
Five male and five female patients were included in the study, with one of the male patients having two teeth extracted for a total of 11 cases. The reasons for teeth extraction included fracture, endodontic failure, periodontal infection, and subgingival decay. Healing was uneventful after the ARP procedure for all patients. A minimum of 120 days elapsed between ARP and the surgical implant procedure. Complete radiographic bone fill was observed in the CBCT image for all extraction sites, and no additional bone augmentation was needed at the time of implant placement.
CONCLUSION
This case series demonstrates that based on clinical and radiographic outcomes, a combination of allogenic and xenogenic bone substitute can be utilized to obtain predictable results following ARP. Future randomized controlled trials that can compare different ratios between the two biomaterials are indicated to guide clinicians in the mixing protocols and their outcomes.
Topics: Humans; Female; Male; Alveolar Process; Tooth Socket; Heterografts; Biocompatible Materials; Tooth Extraction; Alveolar Ridge Augmentation; Allografts; Alveolar Bone Loss
PubMed: 37850957
DOI: No ID Found