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https://www.readbyqxmd.com/read/28549330/impact-of-post-traumatic-stress-disorder-on-oral-health
#1
Ana Cristina de Oliveira Solis, Álvaro Cabral Araújo, Felipe Corchs, Marcio Bernik, Érica Panzani Duran, Cláudio Silva, Francisco Lotufo-Neto
BACKGROUND: The stress experienced as an intense and traumatic event can increase the odds of orofacial pain, affect the biomechanics of masticatory system and compromise the periodontal health. This study was conducted to investigate the impact of post-traumatic stress disorder (PTSD) on oral health. METHODS: A case-control study with a convenience sample was designed. Probing pocket depth (PPD), clinical attachment level (CAL), bleeding on probing, and plaque were recorded at 6 sites per tooth...
May 20, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28548304/delayed-onset-muscle-soreness-doms-does-not-influence-occlusal-sensitivity-and-position-sense-of-the-mandible
#2
Rosaria Bucci, Frank Lobbezoo, Ambrosina Michelotti, Christina Orfanou, Michail Koutris
BACKGROUND: Masticatory muscle-pain patients often complain about sensorimotor changes, but the effects of pain on the psychophysical properties remain unclear. This study aimed to investigate the effects of Delayed-Onset Muscle Soreness (DOMS) on the jaw's position sense (PS) and occlusal sensitivity (OS). METHODS: Twelve participants underwent intense concentric-eccentric jaw exercises. Self-reported muscle fatigue and pain, pain-free maximum mouth opening (MMO), pain pressure thresholds (PPTs) at right and left masseter and right and left anterior temporalis, maximum voluntary bite force (MVBF), PS, and OS were recorded before, immediately after, 24h, 48h, and one week after the exercises...
May 26, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28548212/an-electromyographic-study-on-the-sequential-recruitment-of-bilateral-sternocleidomastoid-and-masseter-muscle-activity-during-gum-chewing
#3
Shao-Xiong Guo, Bao-Yong Li, Yuan Zhang, Li-Juan Zhou, Lu Liu, Sven E Widmalm, Mei-Qing Wang
BACKGROUND: Mandibular functions are associated with electromyographic activity of the jaw muscles and also the sternocleidomastoid muscle (SCM). The precise spatiotemporal relation of SCM and masticatory muscles activities during chewing is worthy of investigation. OBJECTIVE: To analyze the sequential recruitment of SCM and masseter activities during chewing as indicated by the spatiotemporal locations of their activity peaks. METHODS: Jaw movements and bilateral surface electromyographic activity of SCM and masseter were recorded during gum chewing in 20 healthy subjects...
May 26, 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28542710/behavioral-inferences-from-the-high-levels-of-dental-chipping-in-homo-naledi
#4
Ian Towle, Joel D Irish, Isabelle De Groote
OBJECTIVES: A variety of mechanical processes can result in antemortem dental chipping. In this study, chipping data in the teeth of Homo naledi are compared with those of other pertinent dental samples to give insight into their etiology. MATERIALS AND METHODS: Permanent teeth with complete crowns evidencing occlusal wear were examined macroscopically. The location, number, and severity of fractures were recorded and compared to those found in samples of two other South African fossil hominin species and in samples of nonhuman primates (n = 3) and recent humans (n = 7)...
May 24, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28536539/mental-status-as-a-common-factor-for-masticatory-muscle-pain-a-systematic-review
#5
REVIEW
Mieszko Wieckiewicz, Marek Zietek, Joanna Smardz, Dobrochna Zenczak-Wieckiewicz, Natalia Grychowska
Masticatory muscle pain (MMP) is the primary reason for chronic non-odontogenic orofacial pain in the human population. MMP has become a considerable social problem, which affects about 12-14% of the adult population and is 1.5-2 times more frequent in women than in men. This term defines a pain which has its origins in the masticatory muscles. Although MMP is typically felt in the face, jaws, and preauricular area, MMP can radiate to the ear, teeth, head, and neck. This systematic review explains the relationship between MMP and common mental states, such as anxiety, depression, mood and stress-related disorders, and is reported in accordance with PRISMA guidelines...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28536534/a-bio-realistic-finite-element-model-to-evaluate-the-effect-of-masticatory-loadings-on-mouse-mandible-related-tissues
#6
Alexander Tsouknidas, Lucia Jimenez-Rojo, Evangelos Karatsis, Nikolaos Michailidis, Thimios A Mitsiadis
Mice are arguably the dominant model organisms for studies investigating the effect of genetic traits on the pathways to mammalian skull and teeth development, thus being integral in exploring craniofacial and dental evolution. The aim of this study is to analyse the functional significance of masticatory loads on the mouse mandible and identify critical stress accumulations that could trigger phenotypic and/or growth alterations in mandible-related structures. To achieve this, a 3D model of mouse skulls was reconstructed based on Micro Computed Tomography measurements...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28533736/telescopic-overdenture-a-case-report
#7
C S Shruthi, R Poojya, Swati Ram, Anupama
PATIENT: This report describes the case of a 68 year old female patient who presented with the chief complaint of difficulty in chewing and poor aesthetics due to missing teeth. The patient was interested in saving the remaining natural teeth and desired minimal tissue coverage from the prosthesis. After consideration of all the factors involved, it was deemed advisable to resort to a palate free maxillary telescopic complete denture and a mandibular removable partial denture. DISCUSSION: Considering the age of the patient and the cost involved, implant supported prosthesis was ruled out as a treatment option for the patient...
March 2017: International Journal of Biomedical Science: IJBS
https://www.readbyqxmd.com/read/28532571/age-and-sex-related-differences-in-masseter-size-and-its-role-in-oral-functions
#8
Chia-Shu Lin, Ching-Yi Wu, Shih-Yun Wu, Kai-Hsiang Chuang, Hsiao-Han Lin, Dong-Hui Cheng, Wen-Liang Lo
BACKGROUND: The masseter muscle plays a key structural and functional role in the stomatognathic system. Researchers' cumulative evidence has suggested that the variation in the size of a person's masseter muscle may be a critical factor related to individual differences in oral functions. However, researchers have not yet investigated systematically the effect of a person's age and sex on masseter muscle size and the association of masseter muscle size with other clinical metrics, including masticatory performance (MP) and salivary flow rate (SFR)...
May 20, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28529149/autotransplantation-of-third-molars-with-platelet-rich-plasma-for-immediate-replacement-of-extracted-non-restorable-teeth-a-case-series
#9
Jorge Gonzalez-Ocasio, Mark Stevens
PURPOSE: The aim of this study was to examine the use of platelet-rich plasma (PRP) for autotransplantation of third molars as a successful technique to provide immediate tooth structure for space maintenance and masticatory function when premature loss of a permanent tooth occurs and other dental restorative options are not indicated. MATERIALS AND METHODS: This study included 10 healthy patients 10 to 17 years of age with at least 1 immature third molar (one to two thirds of root formation) used to replace extracted non-restorable teeth...
April 25, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28523324/anatomical-features-and-prosthetic-considerations-of-edentulous-patients-with-mandibular-reconstruction-with-autograft-performed-more-than-40-years-ago
#10
Cătălina Murariu-Măgureanu, Cristina Teodora Preoteasa, Laura Iosif, Marina Imre, Marian Cuculescu, Elena Preoteasa
In this manuscript there are presented two cases, both with mandibular reconstruction with autograft harvested from the iliac crest, performed more than 40 years ago, but with different bone defect etiology, i.e., mandibular dysplasia and mandibular fracture, both having currently extensive tooth loss in the mandible, being in need for prosthetic rehabilitation. These cases confirm that reconstructive surgery of mandibular bone defects with autograft from iliac crest has a satisfactory long-term outcome, providing acceptable conditions for prosthetic rehabilitation...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28523241/comparison-of-masticatory-efficiency-according-to-angle-s-classification-of-malocclusion
#11
Jungin Bae, Woo-Sung Son, Seong-Sik Kim, Soo-Byung Park, Yong-Il Kim
OBJECTIVE: The objective of this study was to investigate the differences in masticatory efficiency among patients with different Angle's classes of malocclusion and to assess the correlation between masticatory efficiency and the occlusal contact area. METHODS: The mixing ability index (MAI) was calculated for measuring masticatory efficiency of 61 adult patients according to Angle's classifications of malocclusion. The study included 25, 15, and 21 patients with Angle's Class I, II, and III malocclusions, respectively...
May 2017: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/28521914/the-face-of-conflict-significant-sharp-force-trauma-to-the-mid-facial-skeleton-in-an-individual-of-probable-16th-17th-century-date-excavated-from-byczyna-poland
#12
Agata Izabela Cieślik, Paweł Dąbrowski, Magdalena Anita Przysiężna-Pizarska
A variety of injuries have always been associated with violence, consequences of which people had to deal with. In this paper we present a complex of craniofacial and dental injuries resulted from sharp force trauma. The basis of our study was historical skeletal material excavated from archeological site in Byczyna (11th-17th century), Poland. An individual whose skeleton was exhumed from the grave No. 610 exhibited healed, oblique trauma of the left maxilla, damage to the crowns of right central and lateral incisors and concomitant luxation of the right maxillary central incisor...
June 2017: International Journal of Paleopathology
https://www.readbyqxmd.com/read/28512539/longitudinal-effects-of-rapid-maxillary-expansion-on-masticatory-muscles-activity
#13
Elena Di Palma, Michele Tepedino, Claudio Chimenti, Gianluca M Tartaglia, Chiarella Sforza
BACKGROUND: To investigate the modifications induced by rapid maxillary expansion (RME) on the electromyographic (EMG) activities of the anterior temporal and superficial masseter muscles, in patients without pre-treatment EMG alterations. MATERIAL AND METHODS: Twenty-one patients with unilateral posterior cross-bite selected from the orthodontic department of the University of L'Aquila (Italy), were enrolled. There was no control group in this study since each subject acted as a control of her/himself...
May 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28509954/evidence-in-the-human-of-a-hypotensive-and-a-bradycardic-effect-after-mouth-opening-maintained-for-10%C3%A2-min
#14
Cristina Del Seppia, Sergio Ghione, Paola Foresi, Dominga Lapi, Enza Fommei, Antonio Colantuoni, Rossana Scuri
PURPOSE: We have recently shown that in humans submaximal mouth opening associated with partial masticatory movements for 10 min is followed by a small but significant and prolonged reduction of blood pressure and heart rate. We here report the effects of a fixed mouth opener. METHODS: In 22 seated normotensive volunteers the effect on blood pressure and heart rate was studied in randomized order after fixed mandibular extension and after a control procedure consisting in keeping a stick between the incisor teeth (both for 10 min)...
May 16, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28508937/the-prevalence-of-oropharyngeal-dysphagia-in-adults-presenting-with-temporomandibular-disorders-associated-with-rheumatoid-arthritis-a-systematic-review-and-meta-analysis
#15
REVIEW
Órla Gilheaney, Lina Zgaga, Isolde Harpur, Greg Sheaf, Liss Kiefer, Sibylle Béchet, Margaret Walshe
Temporomandibular disorders (TMDs) are the most frequent non-dental orofacial pain disorders and may be associated with rheumatoid arthritis (RA), resulting in oropharyngeal dysphagia (OD). However, clinicians' understanding of involvement with OD caused by RA-related TMDs is limited and the methodological quality of research in this field has been criticised. Therefore, the aim of this study was to systematically review the prevalence of oral preparatory and oral stage signs and symptoms of OD in adults presenting with TMDs associated with RA...
May 16, 2017: Dysphagia
https://www.readbyqxmd.com/read/28502207/symptoms-in-the-masticatory-system-and-related-quality-of-life-in-prospective-orthognathic-patients
#16
Riikka Pietilä, Mimmi Tolvanen, Timo Peltomäki, Anna-Liisa Svedström-Oristo
OBJECTIVE: The aim of this study was to investigate the relation between orthognathic patients' self-reported symptoms in the head and neck region and their quality of life (QoL). MATERIAL AND METHODS: Participants included were consecutive patients (n = 50) referred to the assessment of orthognathic treatment need and voluntary first-year university students (n = 29). All participants filled in the Orthognathic Quality of Life Questionnaire (OQLQ) and a structured diary created by the authors...
May 13, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28487216/patient-specific-factors-predicting-outcome-of-temporomandibular-joint-arthroscopy-a-6-year-retrospective-study
#17
Mattias Ulmner, Carina Kruger-Weiner, Bodil Lund
PURPOSE: Although indications for the surgical treatment of internal derangement of the temporomandibular joint (TMJ) and the choice of treatment are debated, arthroscopy seems generally accepted as a minimally invasive alternative. The objective of this study was to investigate various factors and their possible correlation with an unsuccessful outcome of arthroscopic lysis and lavage in patients diagnosed with chronic closed lock, arthralgia with or without concomitant osteoarthritis of the TMJ, or systemic rheumatologic disease with involvement of the TMJ...
April 13, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28482240/influence-of-masticatory-function-dental-caries-and-socioeconomic-status-on-the-body-mass-index-of-preschool-children
#18
Maria Eliza Soares, Maria Letícia Ramos-Jorge, Bruna Mota de Alencar, Simone Gomes Oliveira, Luciano José Pereira, Joana Ramos-Jorge
OBJECTIVE: The objective of this study was to determine the influence of masticatory function, dental caries and socioeconomic status on the body mass index (BMI) of preschool children. METHODS: A cross-sectional study was conducted with a sample of 285 children aged three to five years allocated to three groups based on the BMI: underweight, ideal weight and overweight/obesity. Socioeconomic status was determined based on the responses of parents/caregivers to a specific form...
April 28, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28480566/cranial-suture-complexity-in-caviomorph-rodents-rodentia-ctenohystrica
#19
Guido Buezas, Federico Becerra, Aldo Vassallo
Due to their flexibility, sutures are regions that experience greater strains than the surrounding rigid cranial bones. Cranial sutures differ in their degree of interdigitation or complexity. There is evidence indicating that a more convoluted suture better enables the absorption of high stresses coming from dynamic masticatory forces, and other functions. The Order Rodentia is an interesting clade to study this because of its taxa with diverse chewing modes. Due to repeated loading resulting from gnawing and grinding, energy absorption by the sutures might be a crucial factor in these mammals...
May 7, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28474002/fem-and-von-mises-analysis-on-prosthetic-crowns-structural-elements-evaluation-of-different-applied-materials
#20
Ennio Bramanti, Gabriele Cervino, Floriana Lauritano, Luca Fiorillo, Cesare D'Amico, Sergio Sambataro, Deborah Denaro, Fausto Famà, Gaetano Ierardo, Antonella Polimeni, Marco Cicciù
The aim of this paper is to underline the mechanical properties of dental single crown prosthodontics materials in order to differentiate the possibility of using each material for typical clinical condition and masticatory load. Objective of the investigation is to highlight the stress distribution over different common dental crowns by using computer-aided design software and a three-dimensional virtual model. By using engineering systems of analyses like FEM and Von Mises investigations it has been highlighted the strength over simulated lower first premolar crowns made by chrome cobalt alloy, golden alloy, dental resin, and zirconia...
2017: TheScientificWorldJournal
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