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Alveolar resorption

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https://www.readbyqxmd.com/read/28914593/effects-of-local-administration-of-tiludronic-acid-on-experimental-periodontitis-in-diabetic-rats
#1
Nara L T Nunes, Michel R Messora, Luiz Fernando Oliveira, Mario Lisboa, Marina Costa Barcellos Garcia, Rodrigo O C C Rêgo, Arthur Belém Novaes, Sérgio Luís Scombatti de Souza, Edilson Ervolino, Flávia A C Furlaneto
BACKGROUND: Tiludronic acid (TIL) presents antiresorptive and anti-inflammatory properties and it has not been evaluated in the association periodontitis-diabetes mellitus (DM) to date. This study evaluated the effects of local administration of TIL on experimental periodontitis (EP) in rats with streptozotocin-induced DM. METHODS: Thirty-two animals (Rattus norvegicus, albinus, Wistar) were divided into groups DM/C (Control), DM/EP, DM/EP/TIL1 and DM/EP/TIL3. In groups EP, a ligature was placed around mandibular molars (MM)...
September 15, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28906140/evaluation-of-maxillary-central-incisors-on-the-noncleft-and-cleft-sides-in-patients-with-unilateral-cleft-lip-and-palate-part-2-relationship-between-root-resorption-horizontal-tooth-movement-and-quantity-of-grafted-autogenous-bone
#2
Aya Maeda-Iino, Minami Furukawa, Sangho Kwon, Kanako Marutani, Shoko Nakagawa, Takao Fuchigami, Norifumi Nakamura, Shouichi Miyawaki
OBJECTIVE: To evaluate the relationship between external apical root resorption (EARR) of the maxillary central incisors (U1), horizontal orthodontic tooth movement, and quantity of grafted bone in subjects with unilateral cleft lip and palate (UCLP) over an average duration of 8 years. MATERIALS AND METHODS: Thirty subjects with UCLP were evaluated for EARR of U1 after edgewise treatment (T2). The teeth were classified as having no EARR, moderate EARR (combined into "no/moderate" EARR), or severe EARR...
September 14, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28895779/combination-of-bone-graft-and-resorbable-membrane-for-alveolar-ridge-preservation-a-systematic-review-meta-analysis-and-trial-sequential-analysis
#3
Giuseppe Troiano, Khrystyna Zhurakivska, Lorenzo Lo Muzio, Luigi Laino, Marco Cicciù, Lucio Lo Russo
INTRODUCTION: Alveolar ridge preservation (ARP) techniques are aimed to reduce the resorption after tooth extraction. The combination of a graft material covered with a resorbable membrane represent one of the most common strategies performed in the clinical practice. The aim of this systematic review was to analyse evidence regarding potential benefits of ARP procedures performed with allogenic/xenogenic grafts in combination with a resorbable membrane coverage in comparison to a spontaneous healing...
September 12, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28892393/micrometre-sized-magnesium-whitlockite-crystals-in-micropetrosis-of-bisphosphonate-exposed-human-alveolar-bone
#4
Furqan Ali A Shah, Bryan E J Lee, James Tedesco, Cecilia L Wexell, Cecilia Persson, Peter Thomsen, Kathryn Grandfield, Anders Palmquist
Osteocytes are contained within spaces called lacunae and play a central role in bone remodelling. Administered frequently to prevent osteoporotic fractures, anti-resorptive agents such as bisphosphonates suppress osteocyte apoptosis and may be localised within osteocyte lacunae. Bisphosphonates also reduce osteoclast viability, and thereby hinder the repair of damaged tissue. Osteocyte lacunae contribute to toughening mechanisms. Following osteocyte apoptosis, the lacunar space undergoes mineralisation, termed 'micropetrosis'...
September 11, 2017: Nano Letters
https://www.readbyqxmd.com/read/28891903/the-effectiveness-of-oxidized-regenerated-cellulose-as-a-graft-material-in-transalveolar-osteotome-sinus-lift-procedure
#5
Laith A Hussein, Thair A L Hassan
The posterior maxilla is challenged with postextraction alveolar bone resorption and pneumatization drive of the Schneiderian membrane that reduces the subantral distance. To overcome such anatomic obstacle a sinus augmentation procedure was introduced either via lateral or crestal approach depending on residual ridge height. The current study evaluated oxidized regenerated cellulose (ORC) as a grafting material versus osteon II by measuring bone gain and graft density, 24 weeks postoperatively. Twenty consecutive patients (24 cases) aged from 20 to 65 years were considered eligible after clinical and radiographic evaluation...
September 7, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28887721/narrow-implants-2-75-and-3-25%C3%A2-mm-diameter-supporting-a-fixed-splinted-prostheses-in-posterior-regions-of-mandible-one-year-results-from-a-prospective-cohort-study
#6
Tommaso Grandi, Luigi Svezia, Giovanni Grandi
BACKGROUND: Can multiple splinted narrow-diameter implants be used as definitive implants in patients with insufficient bone ridge thickness in posterior regions of the mandible? With this aim, we evaluated their outcomes in this set up to 1 year after loading. METHODS: Forty-two patients with a mean age of 61.3 years old (range 49-73) in need of fixed prosthetic implant-supported rehabilitations in the posterior region of the mandible, presenting a thin alveolar crest, were selected...
September 8, 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28877343/transition-to-agriculture-in-south-eastern-arabia-insights-from-oral-conditions
#7
Olivia Munoz
OBJECTIVES: In Southeast (SE) Arabia, agriculture is supposed to expand around 3000 BC, but its tempo and its actual role in populations' subsistence is still debated by archaeologists. Here, we compare dental health conditions of 11 skeletal samples from coastal and inland sites, dated from the Late Neolithic (ca. 4500-3100 BC) to the Early Bronze Age (EBA), conventionally divided into Hafit (ca. 3100-2700 BC) and Umm an-Nar period (ca. 2700-2000 BC). The goal is to assess long-term trends in subsistence patterns and regional variability during the local transition to agriculture...
September 6, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28863882/evaluation-of-mandibular-bone-after-dental-extraction-in-rats-treated-with-antiresorptive-drugs
#8
Victor Lousan Do Nascimento Poubel, Diogo Lenzi Capella, Adair Roberto Soares Santos, Márcio Correa, Letícia Ruhland Correa, Elena Riet Correa Rivero
PURPOSE: Zoledronic acid (ZOL) and denosumab (Dmab) are commonly used to treat bone pathologies. Because these drugs suppress bone metabolism, this study sought to compare their effect on bone repair after tooth extraction. MATERIALS AND METHODS: Four-week-old male Wistar rats were randomly assigned to 1 of 3 groups: ZOL 0.125 mg/kg, Dmab 0.25 mg/kg, or saline solution 10 mL/kg (control). After 1 week of treatment, the first left molar was extracted; the rats were euthanized at 28 days...
August 3, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28861284/alveolar-socket-preservation-with-demineralised-bovine-bone-mineral-and-a-collagen-matrix
#9
Carlo Maiorana, Pier Paolo Poli, Matteo Deflorian, Tiziano Testori, Federico Mandelli, Heiner Nagursky, Raffaele Vinci
PURPOSE: The aim of the present study was to evaluate the healing of post-extraction sockets following alveolar ridge preservation clinically, radiologically, and histologically. METHODS: Overall, 7 extraction sockets in 7 patients were grafted with demineralised bovine bone mineral and covered with a porcine-derived non-crosslinked collagen matrix (CM). Soft tissue healing was clinically evaluated on the basis of a specific healing index. Horizontal and vertical ridge dimensional changes were assessed clinically and radiographically at baseline and 6 months after implant placement...
August 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/28853235/efficiency-of-different-storage-media-for-avulsed-teeth-in-animal-models-a-systematic-review
#10
Daniele L Longo, Ana C Fumes, Erika C Küchler, Francisco W G Paula-Silva, Paulo Nelson Filho, Léa A B Silva
BACKGROUND/AIMS: Tooth avulsion consists of the complete displacement of a tooth from the alveolar socket. When immediate replantation is not possible, the avulsed tooth should be kept in a storage medium capable of maintaining the viability of periodontal ligament (PDL) cells on the root surface. However, there is no consensus on the best storage medium able to prevent sequels such as ankylosis and tooth resorption. The aim of this study was to perform a systematic review to evaluate the in vivo effectiveness of different storage media for avulsed teeth...
August 29, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28843500/mandibular-implant-retained-overdenture-relining-procedure-with%C3%A2-an-attachment-system-a-step-by-step-demonstration-of-the-technique
#11
Nick Polychronakis, Giorgos Kontakiotis, Nikolaos Soldatos
BACKGROUND AND OVERVIEW: Because of continuous alveolar bone resorption, implant-retained overdentures need to be relined. The purpose of this study was to describe a method for relining an implant-retained overdenture. CASE DESCRIPTION: The authors present a step-by-step technique. A 65-year-old patient sought care for trauma and pain in the oral mucosa underneath his mandibular implant-retained overdenture. The overdenture had been fabricated 4 years previously...
August 22, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28821826/osteocyte-regulation-of-orthodontic-force-mediated-tooth-movement-via-rankl-expression
#12
Ayumi Shoji-Matsunaga, Takehito Ono, Mikihito Hayashi, Hiroshi Takayanagi, Keiji Moriyama, Tomoki Nakashima
Orthodontic tooth movement is achieved by the remodeling of the alveolar bone surrounding roots of teeth. Upon the application of orthodontic force, osteoclastic bone resorption occurs on the compression side of alveolar bone, towards which the teeth are driven. However, the molecular basis for the regulatory mechanisms underlying alveolar bone remodeling has not been sufficiently elucidated. Osteoclastogenesis is regulated by receptor activator of nuclear factor-κB ligand (RANKL), which is postulated to be expressed by the cells surrounding the tooth roots...
August 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818443/types-of-external-root-resorption-of-replanted-teeth-analysis-of-the-clinical-aspects-and-of-interleukin-4-gene-polymorphisms-involvement
#13
Liliane Roskamp, Paula Cristina Trevilatto, Cleber Machado Souza, Ulisses Xavier Silva Neto, Everdan Carneiro, Luiz Fernando Fariniuk, Vânia Portela Ditzel Westphalen
INTRODUCTION: The absence or presence of root resorption on the surface of a replanted tooth indicates an immune-inflammatory reaction. Recent research even suggests the participation of host predominant immunologic profile on types of resorptions detected on the root surface. Because interleukin 4 (IL-4) is an important anti-inflammatory cytokine, this study aimed to investigate the association of clinical variables and polymorphisms in IL4 with types of resorption of replanted teeth after 1 year of follow-up...
August 14, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28814141/effects-of-calcitonin-on-orthodontic-tooth-movement-and-associated-root-resorption-in-rats
#14
Ling Guan, Suai Lin, Weijun Yan, Lei Chen, Xiaofeng Wang
OBJECTIVES: Our main aim was to evaluate the effects of calcitonin (CT) on orthodontic tooth movement (OTM) and orthodontic root resorption in a rat model. MATERIAL AND METHODS: Eighty male Wistar rats were randomly divided into five groups. Rats in the negative control group were not given any appliances or injections. All the remaining rats were used to establish a model of OTM. The positive control group were then injected with normal saline, while rats in the three experimental groups were injected with 0...
August 17, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28762152/quantitative-analysis-of-the-relationship-between-maxillary-incisors-and-the-incisive-canal-by-cone-beam-computed-tomography-in-an-adult-japanese-population
#15
Tomonari Matsumura, Yuji Ishida, Ayako Kawabe, Takashi Ono
BACKGROUND: In setting goals for orthodontic treatment, determining the morphologies of the alveolar bone and maxillary incisor root is important for avoiding root resorption, dehiscence, and fenestration. This study aimed to analyze the configurational relationships among maxillary incisors, the alveolar border, and the incisive canal by cone-beam computed tomography (CBCT). METHODS: Cone-beam CT images of 93 orthodontic patients were evaluated for length of the incisive canal (L); angles between the palatal plane and the maxillary alveolar border (θ1), the incisive canal (θ2), and maxillary incisor (θ3); distance from the left maxillary incisor to the incisive canal (D); and cross-sectional areas of the incisive canal (CSAs) at three vertical levels...
December 2017: Progress in Orthodontics
https://www.readbyqxmd.com/read/28761940/management-of-ankylotic-root-resorption-following-dental-trauma-a-short-review-and-proposal-of-a-treatment-protocol
#16
Shaul Lin, Malka Ashkenazi, Munir Karawan, Sorin T Teich, Zvi Gutmacher
Ankylotic root resorption is a serious complication following traumatic dental injuries. The aetiology of root resorption includes acute injury to the cementum and periodontal ligament, and subsequent biological processes that propagate the harm. The aim of the present paper is to present a structured treatment protocol for teeth that have experienced trauma and are at risk of developing ankylotic root resorption, followed by a decoronation protocol for situations in which ankylotic root resorption developed...
July 31, 2017: Oral Health & Preventive Dentistry
https://www.readbyqxmd.com/read/28752939/effect-of-organic-silicon-methylsulfonylmethane-and-glucosamine-sulfate-in-mandibular-bone-defects-in-rats
#17
Flávia Santiago de Sousa Rosa, Rúbia Teodoro Stuepp, Filipe Modolo, Michelle Tillmann Biz
Organic silicon (OS), glucosamine sulfate (GS), and methylsulfonylmethane (MSM) have been related to bone and connective tissue health and have been considered as basic therapy for osteoarthrosis disorders. Therefore, the aim was to analyze the effect of the association of these three components in mandibular bone defects in rats. Nine rats were used for histocompatibility test. In each animal was implanted the composition (70% OS, 15% GS, 15% MSM) and gutta percha (control) under the dorsal subcutaneous tissue...
July 28, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28745002/dimensional-changes-of-the-maxillary-sinus-following-tooth-extraction-in-the-posterior-maxilla-with-and-without-socket-preservation
#18
Itay Levi, Michal Halperin-Sternfeld, Jacob Horwitz, Hadar Zigdon-Giladi, Eli E Machtei
BACKGROUND: Sinus pneumatization is commonly observed following tooth extraction in the posterior maxilla, however, the role of this pneumatization in the overall changes in the vertical bone height is not clear. PURPOSE: To compare dimensional changes in the alveolar ridge and corresponding maxillary sinus following tooth extraction, with or without socket preservation. MATERIALS AND METHODS: 42 patients underwent tooth extraction (control group) and 21 patients underwent tooth extraction with socket preservation using DBBM (study group)...
July 26, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28738191/comparison-of-dental-implant-performance-following-vertical-alveolar-bone-augmentation-with-alveolar-distraction-osteogenesis-or-autogenous-onlay-bone-grafts-a-retrospective-cohort-study
#19
Kai Zhao, Feng Wang, Wei Huang, Yiqun Wu
PURPOSE: The aim of this retrospective study was to compare the performance of implants placed after alveolar distraction osteogenesis (ADO) or autogenous onlay bone grafting (AOBG) based on implant survival, peri-implant bone resorption, and clinical parameters. MATERIALS AND METHODS: From February 2008 to July 2012, 17 patients (6 women and 11 men) with implant placement after ADO (group 1, n = 8) or AOBG (group 2, n = 9) were included in this retrospective study...
July 1, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28736870/alveolar-bone-resorption-after-primary-tooth-loss-has-a-negative-impact-on-straightforward-implant-installation-in-patients-with-agenesis-of-the-lower-second-premolar
#20
Kristina Bertl, Michael H Bertl, Patrick Heimel, Maria Burt, André Gahleitner, Andreas Stavropoulos, Christian Ulm
OBJECTIVES: To compare the alveolar bone dimensions in patients with lower second premolar (P2) agenesis prior to and after primary molar loss on CT scans, and assess the possibility for straightforward implant placement. METHODS: Alveolar bone dimensions were evaluated on 150 mandibular CT scans in three groups: (i) agenesis of P2, with the primary tooth in situ, and regularly erupted first premolar (P1) and molar (M1) (AW); (ii) agenesis of P2, without the primary tooth in situ for ≥3 m, but regularly erupted P1 and M1 (AWO); and (iii) P1, P2, and M1 regularly erupted (CTR)...
July 23, 2017: Clinical Oral Implants Research
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