1,721,002 research outputs found
The Influence of SARS-CoV-2 Pandemic on TMJ Disorders, OSAS and BMI
No full textThe pandemic of the 21st century had a significant influence on the lives of the world population in a negative way. This situation determined a change of lifestyle; it caused the necessity of social isolation for a great number of people. In fact, people tended to avoid crowded environments, social events, to reduce medical checks and sports activities, favoring sedentary life because of fear of the virus. This social attitude brought a high level of stress that worsened many health conditions. This study has the aim of evaluating the possible influence of the pandemic on temporomandibular joint (TMJ) disorders, obstructive sleep apnea syndrome (OSAS) and body mass index (BMI). An anonymized survey, available in two languages (Italian and English), was given to 208 patients from different private dental practices. In this questionnaire, the patients shared experiences about their life during the pandemic. The article highlighted that during this health emergency, there was an increase in body weight in the considered sample. This brought a worsening of OSAS in 65% of patients with a previous diagnosis. Eventually, an increase in TMJ disorders and orofacial pain was reported
Computer-aided design evaluation of harvestable mandibular bone volume: a clinical and tomographic human study
No full textPURPOSE: To evaluate and compare the volume of bone graft material that can be safely harvested from the mandibular symphysis and rami using a computer-aided design (CAD) software program.
MATERIALS AND METHODS: Preoperative computerized tomography scans from 40 patients undergoing bone augmentation procedures were analyzed. Symphysis and rami cross sections were mapped using a CAD software program (AutoCAD(®), Autodesk, Inc., San Rafael, CA, USA) to evaluate the bone volume that can be safely harvested. CAD calculations were contrasted to intrasurgical measurements in a subgroup of 20 individuals.
RESULTS: CAD calculations yielded a safe harvestable osseous volume of 1.44 cm(3) ± 0.49 for the symphysis and 0.82 cm(3) ± 0.21 for each ramus (p < .0001, confidence interval [CI] 95%: 0.47-0.78). These measurements were significantly lower (p < .0001) than the bone volumes harvested intrasurgically for both symphysis and ramus, respectively (2.40 cm(3) ± 0.50 vs. 2.65 cm(3) ± 0.45). CAD calculations of harvestable symphysis and ramus bone translated into an average of 2.40 cm(3) ± 0.50 (range: 1.80-3.10 cm(3)) and 2.65 cm(3) ± 0.45 (range: 1.90-3.50) of particulate bone graft intrasurgically, respectively. Ramus cortical was significantly thicker than the symphysis cortical, 2.9 ± 0.4 mm versus 2.19 mm ± 0.4 mm (p < .0001, CI 95%: 0.45-1.03).
CONCLUSION: The symphysis and rami are good harvesting sources to obtain dense corticocancellous bone. The significant volumetric CAD differences between the symphysis and ramus seem to balance out intrasurgically and may be due to the greater cortical bone volume at the ramus area. It is plausible to harvest an average of 7.70 cm(3) from the symphysis and rami alone. The use of a CAD software program can enhance surgical treatment planning prior to bone transplantation.
© 2012 Wiley Periodicals, Inc.
KEYWORDS: bone graft; bone regeneration; bone transplantation; computer-aided design; mandible; volumetric computed tomograph
Reazioni allergiche in odontoiatria
No full textLa cura dei soggetti portatori di handicap deve tener conto delle difficoltà operative che si incontrano con tale tipo di paziente, che, date le sue condizioni, non sempre è disposto a collaborare e a sopportare i trattamenti. Tra gli obiettivi principali di questa opera vi è, inoltre, la divulgazione delle conoscenze attuali inerenti alle modalità di approccio clinico, sia diagnostico sia terapeutico, in regime di anestesia locale o generale, affinché la curiosità maturata stimoli l’obbligo professionale e morale di elargire a questi malati speciali una prestazione dignitosa nel rispetto della validità della persona
Periodontopathogen and Epstein-Barr Virus Contamination Affects Transplanted Bone Volume in Sinus Augmentation.
No full textBackground: Bone microbial contamination can impair osteogenesis. Human
herpesviruses-associated vasculitis can cause vascular damage within the osseous
graft and host. This study was conducted to substantiate specific contamination
and assess the impact six months after sinus augmentation. Methods: Culture and
polymerase chain reaction (PCR)-based identification were done on harvested bone
particles and unstimulated whole saliva in a group of 30 patients undergoing
maxillary sinus augmentation. Subjects were divided into two groups: those with
past history of periodontitis and those without. Radiographic evaluation was done
to assess and compare bone healing and volume gain at baseline and six months
after transplantation. Results: Seventeen subjects had history of periodontitis
and 13 did not. Ten showed culture and PCR negative results and belonged to the
periodontally healthy group. The 17 periodontitis subjects showed culture or PCR
positive results for the targeted periodontal pathogens. Periodontitis subjects
were 2.3 times more likely to have positive salivary Epstein-Barr virus type 1
(EBV-1) than those with no history of periodontitis. The likelihood of having
moderate to pronounced bone volume loss six months after augmentation was 7.5
times greater in those subjects presenting contamination with ≥ three specific
pathogens (Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans,
Tannerella forsythia or Prevotella intermedia) versus those with only one
(P<0.05). The OR of pronounced volume loss was 16.3 times higher in those
contaminated with a combination of salivary EBV-1 and ≥ 3 of the above species
versus only EBV-1 (P<0.05). Individuals showing positive salivary EBV-1 had bone
bacterial contamination associated 57% of the time. The OR of having bone
microbial contamination in patients with past history of periodontitis was 37.5
times higher than in individuals without periodontitis. Conclusions: This study
confirms contamination of bone, harvested intraorally, with key
periodontopathogens in individuals undergoing sinus augmentation. Specific
microbial contamination can impair osteogenesis. Saliva may act as a vehicle to
transport EBV and other pathogens into the sinus. Increased bone volume loss
seems to be associated with the occurrence of specific periodontal anaerobic
species, salivary EBV-1 or the combination of both
Temporomandibular disorders: the most common diagnostic approaches
No full textBackground: Temporomandibular disorders (TMDs) are a heterogeneous group of conditions involving the temporomandibular joint complex, and surrounding musculature and osseous components. They are a multifactorial disease that can be determined by organic, genetic aspects, oral parafunctional habits, and psychological stress. They have an annual incidence of more than 5% of the population and about 6% to 12% of the population is affected by symptoms. The diagnostic criteria (DC), introduced by Dworkin, is considered the standard system to diagnose this disease in a specific way. Imaging can support the diagnosis of TMD when history and physical examination findings are equivocal. The aim of the study was to evaluate instrumental examinations and therapies, clinicians prefer to use in different cases of TMDs. Methods: An anonymized survey, available in two languages (Italian and English), was given to 450 patients, 398 (120 males, 274 females and 4 who did not answer) of different private dental practices were considered, using Google Form (Google LLC, Mountain View, CA, USA) and used an electronic platform, from September 2021 to February 2022. There was no reminder sent to patients to let them feel free to answer. Results: We performed binary regression for oral bite prescription considering common symptoms and found that the most representative is jaw block (P=0.007, exponential value [EXP]=0.509), followed by TMJ noises (P=0.01, EXP=0.503) and feeling stressed (P=0.04, EXP=1.125) while headache and tinnitus resulted not significant. Conclusions: The study highlighted that magnetic resonance imaging (MRI) is the most instrumental examination adopted by the clinicians and the oral splint(bite) is the therapy most widespread nowadays, even if TMDs are a multifactorial disease that is not, probably, only linked to an alteration of dental occlusion
Evaluation of a new laser surface implant: scanning electron microscopy/energy dispersive X-ray and X-ray photoelectron spectroscopy analyses.
No full textThe roughness and the purity of implant surfaces are key points in the osteointegration process. The surfaces obtained by classic methods present irregular non-reproducible patterns and furthermore contaminate the implant surface with materials other than titanium which interfere with the process of osteointegration. The aim of the present study is to evaluate, by SEM/EDX and XPS analyses, the surface microstructure and the purity of new laser-treated implant surfaces. The laser treatment of the surface allows to set parameters to determine the roughness in order to obtain a regular and repeatable surface. Furthermore, there being no contact between the implant and the machine, there is no surface contamination with elements other than titanium. In this study we used a diode-pumped solid state laser (DPSS) with Nd:YAG source operating in Q-Switching mode on titanium samples. The resulting samples were analysed by SEM/EDX and XPS to evaluate morphology and purity of the surface. The results show surfaces with very regular roughness and a total absence of contamination
Sinus augmentation procedure of the jaw sinus in patients with mucocele.
No full textThe sinus augmentation procedure of the jaw sinus (SAP) is a surgical technique which permits the prosthetic rehabilitation of the edentulous saddles by the insertion of dental implants where unfavourable conditions exist for their application. Nevertheless, apart from malignant tumors, benign pathologies exist, such as mucocele or radicular cysts, which can complicate the SAP, causing sinusal disturbances. In this study we describe our experience of SAP in patients with mucocele of the jaw sinus, and describe our surgical technique without the preventive emptying of the mucocele. Based on our experience, the SAP operation can be carried out without complications if the distance between the top of the mucocele with SAP and the osteomeatal complex (OMC) is 22 mm, or for mucocele no larger than 18 mm. In fact, these parameters guarantee that, because of the lifting of the sinusal membrane, the antral drainage (AD) duct does not alter or become obstructed
Platelet-rich plasma improves wound healing in multiple myeloma bisphosphonate-associated osteonecrosis of the jaw patients
No full textBisphosphonates are drugs used to treat various metabolic and malignant bone diseases. In the past 10 years intravenous bisphosphonates have been associated with increased risk of osteonecrosis of the jaw (ONJ). The aim of the present study is to evaluate platelet-rich plasma (PRP) wound healing benefits in multiple myeloma (MM) patients who developed ONJ after surgical tooth extraction. The study included 7 patients, 2 males and 5 females. All individuals had been taking zoledronate or pamidronate followed by zoledronate for an average of 5 years. Four subjects had only standard surgical debridement and sequestrectomy to treat the ONJ and three had additional autologous PRP. The patients were followed-up for 3 months. The use of PRP to enhance wound healing and reduce bone exposure seems to be a good treatment protocol in ONJ MM subjects
PHANTOM TOOTH PAIN (ptp)
No full textIndexed Keywords
EMTREE drug terms: amitriptyline; anticonvulsive agent; antidepressant agent; bupivacaine; carbamazepine; chlorazepam; fluphenazine; haloperidol; neuroleptic agent; nonsteroid antiinflammatory agent; opiate; phenytoin; tricyclic antidepressant agent
EMTREE medical terms: adult; analgesia; article; clinical article; drug mechanism; female; human; male; minnesota multiphasic personality inventory; phantom pain; tooth extraction; tooth pai
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