Fatih Sari

Shear bond strength of indirect composite material to monolithic zirconia

PURPOSE This study aimed to evaluate the effect of surface treatments on bond strength of indirect composite material (Tescera Indirect Composite System) to monolithic zirconia (inCoris TZI). MATERIALS AND METHODS Partially stabilized monolithic zirconia blocks were cut into with 2.0 mm thickness. Sintered zirconia specimens were divided into different surface treatment groups: no treatment (control), sandblasting, glaze layer & hydrofluoric acid application, and sandblasting + glaze layer & hydrofluoric acid application. The indirect composite material was applied to the surface of the monolithic zirconia specimens. Shear bond strength value of each specimen was evaluated after thermocycling. The fractured surface of each specimen was examined with a stereomicroscope and a scanning electron microscope to assess the failure types. The data were analyzed using one-way analysis of variance (ANOVA) and Tukey LSD tests (α=.05). RESULTS Bond strength was significantly lower in untreated specimens than in sandblasted specimens (P<.05). No difference between the glaze layer and hydrofluoric acid application treated groups were observed. However, bond strength for these groups were significantly higher as compared with the other two groups (P<.05). CONCLUSION Combined use of glaze layer & hydrofluoric acid application and silanization are reliable for strong and durable bonding between indirect composite material and monolithic zirconia.

The potential etiologic factors influencing tinnitus intensity in patients with temporomandibular disorders

Abstract Objectives: To investigate the potential relationships between the intensity of tinnitus associated with temporomandibular disorders (TMD) and potential etiologic factors, including age, gender, freeway space, sleep bruxism (SB), joint clicking, and headache. Methods: The sample was comprised of 90 patients without any hearing loss, as confirmed by otorhinolaryngology, who self-reported subjective tinnitus and simultaneous TMD, based on the Research Diagnostic Criteria for TMD (RDC/TMD). Results: The results showed a positive, weak correlation between the intensity of tinnitus and age (r = 0.225, p = 0.033). The presence of SB and headache were seen in higher proportions in the present sample, at 75.5% (n = 68) and 66.6% (n = 60), respectively. Conclusions: In a population of patients with subjective tinnitus and TMD, no significant associations were found between tinnitus intensity and age, freeway space, SB, clicking presence, and headache, though gender did show a weak correlation with tinnitus intensity.

Simultaneous oroantral communication closure, sinus‑lifting, and particulate bone grafting and immediate dental implant perforation

The aim of this paper is to introduce an alternative technique for the treatment of oroantral communication (OAC). Closure of OAC, reconstruction of the posterior maxilla by sinus-lifting procedure with a particulate xenograft, and implant insertion were performed in the same operation. A lateral antral approach was used in the sinus elevations. The sinus membranes were elevated gently around the perforation area, and then a barrier membrane was used to close the perforation. Care was taken not to extend the perforation. Next, the maxillary sinus was filled with a particulate xenograft, and an implant was inserted simultaneously. Forty-seven and 40 months of clinical and radiographic follows-up revealed healthy and functional implants in the teeth area.

Simultaneous Retrieval of Root Fragment, Sinus Lifting With Particulated Bone Graft, and Immediate Dental Implant Insertion.

Abstract The aim of these 3 patient reports is to demonstrate a new technique for the reconstruction of the posterior maxilla in patient of a displaced root fragment. The retrieval of root fragments, sinus floor augmentation procedures with a particulated graft, and an implant insertion were performed in the same operation. A simultaneous oro-antral communication was also repaired in 2 patients. Sinus membrane elevations and retrieval of a root fragment via the lateral wall sinus approach were also performed. After repairing a membrane perforation with a particulated graft, an immediate implant insertion was done. An average period of 41 months of clinical and radiographic follow-up revealed a healthy maxillary sinus and a functional implant in the tooth area.

Comparison of fracture resistance of endodontically treated teeth with MOD cavity using different techniques of fiber insertion

Objectives: The purpose of this study was to evaluate the effect of fiber by using different techniques on fracture resistance of endodontically treated molars with mesio-occlusal-distal (MOD) cavities. Materials and Methods: Forty extracted human molars were randomly assigned to four groups (n = 10). Teeth in Groups 2-4 received root canal treatment and a MOD cavity preparation. Group 1 served as control. Group 2 was restored with composite resin. In Group 3, the fiber was inserted into the cavities in buccal to lingual direction by coating the occlusal one-third of the buccal wall to the occlusal one-third of the lingual wall, and lastly, the teeth were restored with composite resin. In Group 4, the flowable resin was coated inside the cavities with the fiber, as Group 3 was before restoring teeth with composite resin. Compressive loading of the teeth was performed at a cross-head speed of 0.5 mm/min. Data were analyzed using one-way ANOVA and Tukey post-hoc tests. Results: Fracture resistance values of all the groups were compared; the differences between Groups 2 and 3 or Groups 2 and 4 were found to be statistically significant. Conclusions: As a result, use of the fiber under composite resin with a flowable resin increased fracture strength to MOD cavities.

Mental Foramenin Lokalizasyonun Radyografik Olarak Değerlendirilmesi

Amac: Mental foramenin yerinin tam olarak lokalize edilmesi alt ceneye uygulanan cerrahi operasyonlar acisindan kritik bir oneme sahiptir. Lokalizasyonunun cesitliligi ozellikle implant cerrahisi gibi bazi operasyonlar sirasinda komplikasyona sebep olabilir. Bu calismanin amaci Sivas ilindeki hastalardan elde edilen dijital panoramik rontgenleri degerlendirerek, mental foramenin lokalizasyonunu arastirmaktir. Gerec ve yontem: Bu calismada, 360 hastanin dijital panoramik rontgeni retrospektif olarak incelenmistir. Panoramik rontgenlerde, mental foramenin farkli lokalizasyonlari cinsiyet ayrimi gozeterek, simetrik ve asimetrik olarak degerlendirilmistir. Ayrica mental foramenin alveoler kret tepesine ve alt cene alt kenarina olan ortalama uzakliklari incelenmistir. Bulgular: Mental foramen hastalarin % 59,4’unde birinci ve ikinci kucuk azi disleri arasinda ,% 37,2’sinde ikinci kucuk azi dis aksinin hizasinda oldugu belirlendi. Erkeklerin % 64,6’sinda ve kadinlarin % 55,1’ninde mental foramenin birinci ve ikinci kucuk azi disleri arasinda oldugu bulundu. Mental foramenin hastalarin % 80,3’unde simetrik oldugu saptandi. Mental foramenin sag tarafta alveoler kret tepesine 16,79 mm ve alt cene alt kenarina 12,46 mm ortalama uzaklikta oldugu belirlendi. Sol tarafta ise foramenin alveoler kret tepesine 16,80 mm alt cene alt kenarina 12,58 mm ortalama uzaklikta oldugu bulundu. Sonuc: Sonuc olarak, panoramik radyografide Sivas il genelinde mental foramenin en sik olarak birinci ve ikinci kucuk azi disleri arasinda lokalize olduklar ve diger pozisyonlarda lokalizasyonlarinin ise cok dusuk oldugu gorulmustur. Vakalarin cogunda bilateral olarak simetrik oldugu gorulmustur.

Gömülü süt ikinci azı dişine bağlı olarak meydana gelen perikoronitis vakası

Primary tooth impaction has been reported to be very rare and studies report prevalence rates of impaction to be form 1:10.000. Primary tooth impactions can occur because of various reasons, including ankylosis, congenitally missing permanent teeth, defects in periodontal membrane, trauma, injury of the periodontal ligament, precocious eruption of the first permanent molar, defective eruptive force, or a combination of these factors. In this article we present a case of impacted mandibular second deciduous molar tooth with pericoronitis and discuss the etiology and its management by surgical intervention in an 8 year old girl. OZET Gomulu sut dislerine ait cok az sayida rapor vardir ve bu calismalarda sut dislerinin gomulu kalma insidansi 10.000’de 1 olarak belirtilmistir. Cesitli nedenler sut dislerinin gomulu kalmasina neden olabilmektedir. Bunlar; ankiloz, konjenital olarak daimi dis eksikligi, periodontal membranda defekt, travma, periodontal ligamentte yaralanma, erken suren daimi birinci molar, hatali surme kuvvetleri ya da bu faktorlerin kombinasyonlaridir. Bu raporda 8 yasindaki bir kiz cocugunun gomulu sut alt ikinci azi disine bagli olarak gelisen perikoronitis vakasi sunulmus, etyolojik faktorler ve cerrahi tedavi secenegi tartisilmistir. Anahtar Kelimeler: Gomulu sut disi, perikoronitis, ankiloz

Mandibular tam protez ölçü modellerinin üç boyutlu bir ölçüm yöntemiyle karşılaştırılması

Amac: Bu cal man n amacmandibular alveolar kret olculerinin stabilitesinin uc boyutlu bir olcum yontemiyle de erlendirilmesidir. Gerec ve Yontem: Bu cal mada 14 di siz hastadan al nan olculer kullan ld . Hastalar iki gruba ayr ld . Son olcu maddesi olarak birinci grupta cinko-oksid ojenol (ZOE), ikinci grupta polivinilsiloksan (PVS) kullan larak al nan olculerden ana modeller elde edildi. Ana modeller uzerinden modifiye ahsi ka k haz rlanarak hastalardan olcu alc s ile yeniden olculer al nd . Elde edilen modeller uzerinde s n r cizgileri tahmini olarak cizildi ve alveol kret uzerinde 14 referans noktas belirlendi. Ana modellerin foto raflar al nd (Nikon E2/E2s) ve 3 boyutlu goruntuleri elde edildi. Alveolar kret yuksekli i, protezin oturdu u alan n buyuklu u ve cevresel s n r cizgilerinin uzunlu u 3 boyutlu goruntuler uzerinde olculdu. Bulgular: Bu cal mada olcu alc s yla elde edilen modellerdeki olcum de erlerinin di erlerinden yuksek oldu u goruldu. Olcu alc s yla bundan du uk de erlerde olcum de erleri gosteren cinko-oksid ojenol olcu modelleri aras nda istatistiksel olarak anlamlbulunamad (p>0.05). Buna kar l k polivinilsiloksan ile elde edilen modellerin olcum de erlerinde alveolar kret yuksekli i istatistiksel olarak anlaml bir azalma gosterdi (p< 0.05). Sonuc: Olcu maddesinin alveolar mukoz membran uzerindeki etkileri membran n ozelliklerine ve ahsi ka k dizayn na ba lkalmaktad r. Bu yuzden desteksiz reziduel kretlere sahip mandibular tam protez hastalar nda olcu maddesinin ve olcu tekni inin secimi oldukca onemlidir. Mandibular tam protez olculerinin olcu alc s ve cinko-oksid ojenol olcu maddesi ile al nmas onerilmektedir