1,721,039 research outputs found
DENTAL ROOT SURFACE TREATMENT WITH ETHYLENEDIAMINETETRAACETIC ACID DOES NOT IMPROVE ENAMEL MATRIX DERIVATIVE PEPTIDE TREATMENT WITHIN INTRABONY DEFECTS: A RETROSPECTIVE STUDY
No full textIntroduction
The dental root surface treatment is quite often considered a key factor in achieving regeneration of the periodontal defect. The aim of this retrospective study was to compare the 12-month clinical outcomes obtained by the application of enamel matrix derivative peptide (EMP) with and without EDTA dental root conditioning in intrabony 2-3-wall defect treated by minimally invasive surgical therapy (MIST).
Material and Methods
Twenty-two healthy patients, affected from moderate or severe chronic periodontitis, with a 2-3-wall intrabony defect (≥4 mm deep and ≥2 mm wide), were selected. Each patient was treated by MIST Technique and EMP was applied into the defect during the surgery, on the dental roots. However, in the treatment group-1 (TG1) the root surfaces were not previously conditioned whilst in the treatment group-2 (TG2) root surfaces were conditioned by EDTA. Immediately before surgery (T0) and 12-month after (T2) the probing depth (PD) and gingival recession (GR) were registered at the experimental sites and the full-mouth plaque score (FMPS) and full-mouth bleeding score (FMBS) were also registered.
Results
No statistically significant differences were shown between TG1 and TG2 at T0 and T1 in term of PD, GR, FMPS while a statistically significant greater FMBS was recorded in TG2 at T1. PD, FMPS and FMBS indices significantly decreased between T0 and T1 both in TG1 and TG2 (p<0.05). GR increase resulted not statistically significant both in TG1 and TG2 (p<0.05) between T0 and T1.
Conclusions
In this retrospective study both the treatments achieved favourable and comparable clinical results. The PD and GR were similar between the two treatment groups (TG1 and TG2) in the single phases considered (T0 and T1) and during the follow-up (T0-T1). The EDTA conditioning of dental root surfaces did not seem efficient to improve the clinical results in the treatment of 2-3-wall periodontal defects
Multidisciplinary Management and Pulp Vitality Preservation of a Tooth With Extensive Iatrogenic Furcal Root Perforation and Biologic Width Violation
No full textThis article describes the case of a vital molar tooth with a vast furcal iatrogenic root perforation and biologic width violation, which was successfully managed by a multidisciplinary approach aimed at preserving pulp vitality. The root perforation was cleaned and then sealed with mineral trioxide aggregate, which was positioned onto the pulp at the canal orifices. After one month, the patient was not reporting symptoms, and the tooth was positively responding to the thermal test. The tooth was orthodontically extruded, subjected to minimally invasive crown lengthening, and prepared to receive a full-crown restoration. Radiotransparent composite resin was chosen as a permanent restorative material to better monitor possible endodontic complications at the coronal level. The patient's tooth was followed up for eight years uneventfully. The present case is an example of the possibility to subject a root-repaired tooth with fully formed apices to conservative yet complex multidisciplinary treatment while maintaining pulp vitality
Retreatment of Experimental Carrier-Based Obturators with the Remover NiTi Instrument: Evaluation of Apical Extrusion and Effects of New Kinematics
Full text linkThe objective of this study is to evaluate the retreatment time and weight of apically extruded debris yielded by two different kinematics during the removal of different root canal filling materials. Forty straight single-rooted extracted teeth were instrumented with HyFlex CM files and obturated with two different techniques: 25.04 HyFlex experimental carrier-based obturators (Coltène/Whaledent, Altstätten, Switzerland) (group 1) or 25.04 single gutta-percha cones (Roeko Coltène/Whaledent, Altstätten, Switzerland) (group 2) and Guttaflow Bioseal as the sealer. Samples were divided into four subgroups (n = 10) according to the used kinematics for the removal of root canal filling materials: continuous rotation (A) or retreatment motion (B) with a Remover and HyFlex EDM Nickel-Titanium instruments activated with a CanalPro Jeni micromotor (Coltène/Whaledent, Altstätten, Switzerland). Time for retreatment was digitally recorded, and debris extruded from the apex was collected in Eppendorf tubes and weighted with an analytical balance. Data on retreatment time and apical extrusion were statistically analyzed with the Kruskal-Wallis test (p<0.05). Working length was achieved in all the retreated samples. The removal of root filling material resulted significantly faster with the Jeni mode (p<0.001), and the difference was significant for the removal of both filling materials (p<0.05). No significant differences on debris extrusion between single cone and experimental obturators groups were noted (p>0.05), and no significant differences between kinematics (continuous rotation vs. Jeni motion) were observed (p>0.05). All the tested retreatment strategies lead to an extrusion of material from the apex, and the weight of apically extruded debris was similar. The use of the innovative CanalPro Jeni kinematics accelerates the time for the removal of root filling materials
HyFlex EDM: caratteristiche superficiali e resistenza alla fatica ciclica di innovativi strumenti rotanti NiTi prodotti per elettroerosione
No full textINTRODUZIONE
Gli strumenti endodontici in Controlled Memory Wire hanno mostrato flessibilità e comportamenti meccanici superiori alle leghe NiTi convenzionali. Gli HyFlex EDM (Colténe/Whaledent, Switzerland) sono prodotti con un innovativo processo di fabbricazione per elettroerosione (electro discharge machining-EDM) mediante scariche elettriche generate da un elettrodo in prossimità dello strumento.
OBIETTIVI
Esaminare la morfologia super ciale e la microstruttura interna di prototipi HyFlex EDM nuovi e usati in vitro e testare la loro resistenza in fatica ciclica.
MATERIALI E METODI
Quindici prototipi HyFlex EDM sono stati utilizzati per la strumentazione in vitro di 10 canali curvi. La morfologia di super cie e la microstruttura interna di strumenti nuovi e usati sono state indagate con un Microscopio Elet- tronico a Scansione (ESEM-EVO50 EP, Carl Zeiss, Germany) con Spettroscopia EDS e con un microscopio ottico metallogra co (Leica DMI5000 M, Germany). Altri 30 HyFlex EDM e 20 HyFlex CM sono stati testati in fatica ciclica in un canale arti ciale con angolo di curvatura di 70°. I dati ottenuti sono stati validati con il test di Kruskal-Wallis e glistrumenti fratturati sono stati sottoposti ad analisi frattogra ca con ESEM.
RISULTATI E DISCUSSIONE
Le indagini all’ESEM hanno rivelato una speci ca struttura irregolare caratterizzata da una super cie con mor- fologia a “cratere”. Non sono state evidenziate alterazioni super ciali nei prototipi utilizzati. Tutti gli strumenti, dopo diversi utilizzi, hanno preservato il loro peculiare aspetto crateriforme e non hanno mostrato appiattimento dell’angolo di taglio delle lame. Non si è veri cata nessuna frattura. L‘analisi metallogra ca sulla sezione trasver- sale degli strumenti ha mostrato la presenza di una microstruttura uniforme con un’omogenea fase martensitica. I test di fatica ciclica hanno evidenziato una resistenza superiore degli HyFlex EDM rispetto agli HyFlex CM, pari a circa il 700% quando strumenti di stessa conicità e diametro in punta sono stati esaminati. Gli HyFlex EDM hanno dimostrato un a dabile comportamento in vitro quando sottoposti a strumentazione di canali molto curvi. La caratteristica principale di tali strumenti è la super cie crateriforme che ben si conserva dopo ripetuti utilizzi. Gli strumenti di diametro minore sono apparsi quelli maggiormente stressati. La resistenza in fatica ciclica di stru- menti della stessa lega sembra essere notevolmente aumentata dal di erente processo di produzione.
Se da una parte l’implantologia o re al clinico un’opzione terapeutica altamente predicibile, in particolar modo nella sostituzione degli elementi naturali mancanti o irrecuperabili, dall’altra la terapia endodontica e restaura- tiva deve rappresentare la prima strada da percorrere in ogni piano di trattamento interdisciplinare.
OBIETTIVI
Il mantenimento dell’elemento naturale è oggi possibile in virtù di strumenti sempre più a dabili e di tecniche sempre più conservative sia in ambito endodontico che in ambito restaurativo. La letteratura scienti ca riporta percentuali di successo paragonabili tra trattamento endodontico e trattamento implantare. Pertanto la scelta conservativa o estrattiva-implantare non deve dipendere da particolari attitudini del clinico, ma dalla gestione del caso con la tecnica migliore in termini di costi-bene ci.
MATERIALI E METODI
Vengono presentati e discussi casi clinici complessi gestiti con approccio interdiciplinare. Vengono descritti gli aspetti diagnostici che hanno indotto il clinico all’opzione estrattiva ed alla sostituzione con un impianto osteo-integrato. Vengono riportati casi di elementi gravemente compromessi, recuperati attraverso ritrattamenti endodontici e terapie restaurative adesive. La presentazione di follow-up a distanza testimonia la correttezza dell’opzione terapeutica scelta.
RISULTATI E DISCUSSIONE
Il mantenimento dell’elemento naturale, con il ripristino di forma, funzione ed estetica, rappresenta la prima scelta per il clinico. In presenza di tessuti parodontali sani e sostanza dentale sana residua su ciente, tutti gli elementi dentali che si possano inserire in un piano di trattamento interdisciplinare devono poter essere preser- vati. Il successo a lungo termine in casi complessi dipenderà dal rispetto e dalla minuziosa applicazione di pro- tocolli operativi codi cati, dall’utilizzo di uno strumentario adeguato (ingrandimento, illuminazione dedicata e sistemi ad ultrasuoni in primis) e dal fattore operatore, aspetto, quest’ultimo, che non deve essere sottovalutato
Evaluation of the root filling quality with experimental carrier-based obturators: a CLSM and FEG-SEM analysis
Full text linkThis study evaluated tubule penetration of GuttaFlow Bioseal with cold single cone or carrier-based technique, under confocal laser scanning microscopy (CLSM). Twenty straight single-rooted teeth were instrumented with Hyflex CM and divided in two groups (n = 10) according to the obturation method: single cold gutta-percha cones; experimental carrier-based obturators. GuttaFlow Bioseal, labelled with Rhodamine B dye, was used as sealer in both groups. Teeth transversally sectioned were observed under CLSM. Percentage of sealer penetration and integrity of sealer layer perimeter were measured. Surface and microstructural characteristics of obturators and gutta-percha cones were compared by FEG-SEM and EDX analysis. No significant differences were found between groups for each examined parameter. Significant differences (P < 0.05) were reported mainly within groups. Integrity was similar among and within groups. FEG-SEM/EDX analysis of obturators revealed the presence of Ba and Zn. Carrier-based obturation technique associated with GuttaFlow Bioseal does not seem to affect sealer penetration into dentinal tubules
Ulcerative oral lesions: an overview of non-pharmacologic treatment options
Full text linkBackground and Objective: Ulcerative diseases frequently affect the oral cavity and are disabling conditions. The management is challenging, and traditional treatments are associated with potential side effects. Alternative non-pharmacologic strategies have become available to effectively manage these conditions. This review aims at providing a synthesis of the most common erosive-ulcerative oral diseases and an updated overview of the main non-pharmacologic options for their management, such as laser therapy, ozone applications, and photodynamic therapy. Methods: A narrative review was conducted by searching PubMed/MEDLINE for the most recent relevant systematic reviews or, alternatively, clinical trials or case reports. Results: Laser photobiomodulation therapy (PBMT), ozone therapy and photodynamic therapy (PDT) generally resulted in rapid relief of painful symptoms, reduced healing time and improved oral functions and patients’ quality of life. No major side-effects were reported. Regardless of the primary etiology, photodynamic therapy proved particularly effective in case of infections. Ozone was used in gaseous, ozonized water and oil formulations. The most used light sources were Nd:YAG, He:Ne, Er,Cr:YSGG, red and infrared diode lasers and LED for PBMT, while red diode lasers prevailed for PDT. The most common photosensitizers were methylene blue and toluidine blue O. Conclusions: There is growing evidence for an efficacy of PBMT, ozone and PDT for the treatment of ulcerative oral lesions, and therefore these approaches should be considered as valid non-pharmacologic strategies. However, due to the great heterogeneity of protocols, additional well-designed research to identify the best therapeutic protocols is needed. (www.actabiomedica.it)
Ozone Treatment for the Management of Caries in Primary Dentition: A Systematic Review of Clinical Studies
Full text linkDental caries in children is a frequent and debilitating condition, whose management is often challenging. The aim of this systematic review was to investigate the effectiveness of ozone applications for the treatment of caries in primary dentition. According to PRISMA guidelines, a systematic literature search was performed up to 6 January 2024. Clinical studies using ozone to treat caries of deciduous teeth were considered for inclusion. Out of the 215 records retrieved, seven studies were eventually included in the review, all of which used gaseous ozone. Four studies were judged at high risk of bias, two at low risk, and one of some concerns. The great heterogeneity of designs, outcomes, and protocols made it impossible to conduct a meta-analysis. Despite some limitations, the evidence yielded by the included studies suggests that ozone application, regardless of the protocol applied, is comparable to other interventions in terms of clinical outcomes and anti-bacterial activity, with no reported adverse effects and good patient acceptance. Therefore, ozone application may be a non-invasive approach to treat caries in primary dentition, especially in very young and poorly cooperative patients. Further standardized and rigorous studies are, however, needed to identify the best clinical protocols for this specific field
COLOR MATCH EVALUATION OF TWO SINGLE SHADE COMPOSITES BEFORE AND AFTER BLEACHING PROCEDURE
No full textAim: the aim of this case report was to evaluate instrumental and visual color match of two single shade resin-based com- posites in human extracted teeth before and after bleaching treatments.
Methods: two extracted human posterior sound teeth were used. Round shaped V class cavities (2x2x4mm) were prepa- red buccally 2mm away from the CEJ. Two single shade resin composites (ES-Essentia Universal, GC and CL-Clearfill Maje- sty ES2 Universal, Kuraray) were used for the restorations. To- oth color was measured 1mm beside the cavity and in the cen- ter of the restoration using a spectrophotometer (VITA Easysha- de V, VITA Zahnfabrik). Visual analysis were carried out by 16 calibrated observers and differences were graded as 0:excel- lent match; 1:very good match; 2:not so good match; 3:obvious
mismatch; 4:huge mismatch. Teeth were then bleached using 40% H2O2 (Opalescence Boost PF, Ultradent) and instrumental and visual evaluations were replied after 24 hours.
Results: at baseline, both ES restoration and tooth showed an A3 VITA scale grade, and respectively A2 and C2 after blea- ching. Color match visual analysis showed a mean value of 0.25 both prior and after bleaching. At baseline, both CL resto- ration and tooth showed an A4VITA scale grade, and respecti- vely A3 and C3 after bleaching. Color match visual analysis showed a mean value of 0.87 before and 0.31 after bleaching. Conclusions: within the limits of a single case report, both composites seem to have excellent color match properties with the surrounding tooth structure, from both instrumental and visual points of view
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