505 research outputs found
Gingival crevicular fluid alkaline phosphatase activity as a non-invasive biomarker of skeletal maturation
No full textTo cite this article: Perinetti G, Baccetti T, Contardo L, Di Lenarda R: Gingival crevicular fluid alkaline phosphatase activity as a non-invasive biomarker of skeletal maturation Orthod Craniofac Res 2011; 14 :44–50Perinetti G, Baccetti T, Contardo L, Di Lenarda RTo evaluate the gingival crevicular fluid (GCF) alkaline phosphatase (ALP) activity in growing subjects in relation to the stages of individual skeletal maturation.The Department of Biomedicine, University of Trieste. Seventy-two healthy growing subjects (45 women and 27 men; range, 7.8–17.7 years).Double-blind, prospective, cross-sectional design. Samples of GCF were collected from each subject at the mesial and distal sites of both of the central incisors, in the maxilla and mandible. Skeletal maturation phase was assessed through the cervical vertebral maturation (CVM) method. Enzymatic activity was determined spectrophotometrically.The relationship between GCF ALP activity and CVM stages was significant. In particular, a twofold peak in enzyme activity was seen at the CS3 and CS4 pubertal stages, compared to the pre-pubertal stages (CS1 and CS2) and post-pubertal stages (CS5 and CS6), at both the maxillary and mandibular sites. No differences were seen between the maxillary and mandibular sites, or between the sexes.As an adjunct to standard methods based upon radiographic parameters, the GCF ALP may be a candidate as a non-invasive clinical biomarker for the identification of the pubertal growth spurt in periodontally healthy subjects scheduled for orthodontic treatment.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/79300/1/j.1601-6343.2010.01506.x.pd
Perdita di volume osseo nel mascellare posteriore
No full textLa riabilitazione a supporto implantare del mascellare posteriore edentulo presenta spesso problematiche relative alla limitata dimensione verticale e alla scarsa densità dell’osso crestale residuo.
Tuttavia, grazie agli sviluppi delle moderne tecniche di implantologia, è oggi possibile sia inserire impianti nel limitato volume osseo a disposizione, sia ricorrere a tecniche rigenerative che consentano di recuperare l’osso perduto.
Questo testo fornisce un’approfondita analisi del piano di trattamento e delle varie opzioni chirurgiche e protesiche disponibili: ogni capitolo contiene dettagliate informazioni, basate sulla più recente evidenza scientifica, sui passaggi diagnostici e terapeutici necessari per raggiungere e mantenere nel tempo risultati clinici ottimali.
Le opzioni minimamente invasive rappresentate dall’utilizzo di impianti corti o inclinati sono affrontate in modo approfondito, fornendo suggerimenti pratici di carattere chirurgico e protesico che possono contribuire positivamente a una prognosi favorevole.
Sono inoltre descritte step-by-step le tecniche chirurgiche di rialzo del seno mascellare con approccio laterale e transcrestale, presentando quindi un razionale biologico che sia di ausilio per il clinico nella scelta fra i diversi approcci chirurgici e fra i diversi biomateriali utilizzabili in questa procedura clinica, evidenziando vantaggi e svantaggi delle varie tipologie disponibili
AN EX VIVO COMPARISON OF THREE DIFFERENT GUTTA-PERCHA CONES WHEN COMPACTED AT DIFFERENT TEMPERATURES: RHEOLOGICAL CONSIDERATIONS IN RELATION TO THE FILLING OF LATERAL CANALS
No full textAim To compare ex vivo the penetration of three brands of gutta-percha cones, compacted under a constant force and heated to different temperatures, into artificial lateral canals. Methodology Resin blocks with simulated main canals, each having two lateral canals (C at 6.5 and A at 13 mm from the surface of the resin block), were selected. A gutta-percha cone, either Mynol MF, Hygenic MF or GT Tulsa 0.04 was compacted into each main canal for 5 s using a wire rod with a diameter of 0.7 mm soldered to the bottom of a metal cylinder, with a force of 2.7 kg at controlled temperatures of 37, 42, 47, 52, 60 degrees C. The penetration of each brand of gutta-percha into 60 lateral canals (10 at each temperature) was measured using a stereomicroscope. Statistical analysis was performed using the ANOVA, the Scheffe test and the t-test. Results None of the three brands of cones entered up to 0.1 mm within either lateral canal until a temperature of 47 degrees C was reached; at that temperature only Mynol cones (P <= 0.05) penetrated in four of 10 A-level canals (mean 0.13 +/- 0.19 mm) and in all 10 C-level canals (mean 0.43 +/- 0.12 mm). The A-level lateral canals were penetrated at 52 degrees C by Mynol cones (mean 0.76 +/- 0.34 mm) to a significantly greater distance (P <= 0.05) than Tulsa cones (mean 0.31 +/- 0.12 mm) and Hygenic cones (mean 0.11 +/- 0.08 mm). At 60 degrees C the Mynol cones (mean 1.93 +/- 0.34 mm) penetrated significantly more (P <= 0.05) than the Tulsa cones (mean 0.86 +/- 0.22 mm) and Hygenic cones (mean 0.67 +/- 0.19 mm). The C-level lateral canals were penetrated at 52 degrees C by Mynol cones (mean 0.91 +/- 0.29 mm) to a significantly greater distance (P <= 0.05) than Tulsa cones (mean 0.47 +/- 0.16 mm) and Hygenic cones (mean 0.46 +/- 0.15 mm), whilst no significant difference was found at 60 degrees C. Conclusions When heated and compacted, the three gutta-percha cones penetrated the lateral canals to different degrees. They penetrated more than 0.43 mm into the lateral canals only at temperatures higher than 47 degrees C
Erratum: Parotid gland edema after chlorhexidine mouthrinse: Case report and literature review (The Open Dentistry Journal, 2018, 12: 1147-1151)
No full textParotid Gland Edema After Chlorhexidine Mouthrinse: Case Report and Literature Review The Open Dentistry Journal, 2018, 12: 1147-1151 The correct list of authors’ names is provided and replaced online which is mentioned as under: Federico Berton1, Giulia Pipinato1, Michele Maglione1, Domenico Baldi2, Roberto Di Lenarda1 and Claudio Stacchi1,* The published list of authors was: Federico Berton1, Pipinato Giulia1, Maglione Michele1, Baldi Domenico2, Di Lenarda Roberto1 and Stacchi Claudio1
Influenza della tecnica di pretrattamento smalteo sull’infiltrazione marginale dei sigillanti
No full textInfluenza della tecnica di pretrattamento smalteo sull’infiltrazione marginale dei sigillant
Efficacia di differenti sistemi di cementazione intracanalare mediante test di microtensile
No full textInfluenza della tecnica di pretrattamento smalteo sull’infiltrazione marginale dei sigillanti
No full textAn in vitro model to investigate filling of lateral canals
No full textAims of this work were to examine lateral canals in extracted teeth, to propose a new technique to produce artificial lateral canals, and to compare two obturation techniques. Cleared roots were examined to record measure and shape of lateral canals. Artificial lateral canals were prepared on human demineralized teeth before final clearing. Specimens were divided in two groups: canals of group 1 were filled with Schilder's technique, canals of group 2 were filled with vertical compaction with apical backfilling. Stereomicroscopic analysis of lateral canal filling revealed lower filling rates in apical canals compared to coronal ones and higher filling rates with "vertical compaction with apical backfilling" compared to Schilder's group. The tested procedure appears to be a reliable technique to obtain standardized lateral canals and to compare filling procedures
INFLUENZA DELL’UTILIZZO DELL’APPLICAZIONE ENDODONTICA DI IDROSSIDO DI CALCIO SUL SIGILLO APICALE
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