Papers by İrem Güzeler Demir
Sut ve daimi dislerde kullanilan dentin adezivlerin universal ozelliklerinin mikrosizinti acisind... more Sut ve daimi dislerde kullanilan dentin adezivlerin universal ozelliklerinin mikrosizinti acisindan degerlendirilmesi, Hacettepe Universitesi Saglik Bilimleri Enstitusu Pedodonti Programi Doktora Tezi, Ankara, 2013. Bu calismanin amaci; in vitro sartlarda sut ve daimi dislerde acilan sinif V kavitelerin farkli adeziv sistemler kullanilarak kompomer ile restore edilmesini takiben meydana gelen mikrosizinti miktarinin incelenmesidir. Bu amacla, calismada degisme zamani gelen 80 adet persiste curuksuz sut molar dis ve 80 adet ortodontik veya periodontal sebeple travmatize edilmeden cekilmis 3. buyuk azi dis kullanilmistir. Disler sut ve daimi olmak uzere 2 ana gruba ayrilmis, daha sonra sut ve daimi dis grubundaki disler kendi iclerinde randomize olarak her grupta 10 dis olacak sekilde 8 gruba ayrilmistir. Gruplarda kullanilan materyaller; Grup 1: Prime&Bond NT, Grup 2: XP Bond,Grup 3:Xeno V Bond,Grup 4: Clearfil Protect Bond, Grup 5: Clearfil S3 Bond, Grup:6 G Bond,Grup 7:Asit+Prime&B...
Water Science and Technology, 2020
In microalgae harvesting, flocculation is usually a compulsory preliminary step to further separa... more In microalgae harvesting, flocculation is usually a compulsory preliminary step to further separation by sedimentation or flotation. For some microalgae species, and under certain growth conditions, flocculation can occur naturally. Natural flocculation presents many advantages as it does not require the addition of any flocculants to the culture medium and shows high efficiency rate. But because natural flocculation is so specific to the species and conditions, and thanks to the knowledge accumulated over the last years on flocculation mechanisms, researchers have developed strategies to induce this natural harvesting. In this review, we first decipher at the molecular scale the underlying mechanisms of natural flocculation and illustrate them by selected studies from the literature. Then we describe the developed strategies to induce natural flocculation that include the use of biopolymers, chemically modified or not, or involve mixed species cultures. But all these strategies nee...
Journal of dentistry for children (Chicago, Ill.)
Inflammatory root resorption is a serious complication of dental trauma, which leads to progressi... more Inflammatory root resorption is a serious complication of dental trauma, which leads to progressive loss of the root structure. The purpose of this report was to present a case of perforating inflammatory root resorption in a previously traumatized young incisor tooth with incomplete root development. A 12-year-old girl, who had suffered a traumatic dental injury 4 years earlier, was referred with symptoms of pain and swelling in a permanent maxillary central incisor. The tooth had been root-filled and had thin dentinal walls and a wide open apex. During retreatment, a perforating resorption site was observed on the root's distal aspect. Because the entire root canal filling could not be removed, the resorption site was repaired with white mineral trioxide aggregate in the presence of the remaining gutta-percha. Clinical and radiographic follow-up was conducted for 36 months, demonstrating arrest of the resorptive process, regeneration of the periradicular tissues, and re-establ...
Journal (Canadian Dental Association), 2011
Inflammatory root resorption is a pathologic condition caused by several etiologic factors includ... more Inflammatory root resorption is a pathologic condition caused by several etiologic factors including traumatic dental injury. In this case report, we describe treatment of a maxillary lateral incisor affected by severe, perforating inflammatory root resorption. An 11-year-old patient presented with a previously traumatized, root-filled maxillary lateral incisor associated with pain, mobility and a sinus tract. Radiographic examination revealed a large periradicular lesion involving pathologic resorption of the apical region of the root. After removal of the root canal filling, the tooth was treated with intracanal calcium hydroxide for 2 weeks. The calcium hydroxide dressing was then removed and the entire root canal was filled with mineral trioxide aggregate. The endodontic access cavity was restored with composite resin. After 1 year, advanced osseous healing of the periradicular region had occurred and no clinical symptoms were apparent.
Dental Traumatology, 2010
Inflammatory root resorption is a serious complication of dental trauma, which leads to progressi... more Inflammatory root resorption is a serious complication of dental trauma, which leads to progressive loss of the root structure. This report describes the treatment a previously traumatized young maxillary lateral incisor, severely affected by inflammatory root resorption. An 11-year-old boy presented with pain and mobility in his maxillary incisors which experienced fall trauma 2 years earlier. Radiographic examination revealed incomplete root development of the right central incisor, associated with advanced inflammatory root resorption and a periapical lesion. Following removal of a prior long-term calcium hydroxide dressing, the root canal was submitted to a 2-week irrigation regimen involving 1.25% sodium hypochlorite and 2% chlorhexidine gluconate. Thereafter, the entire root was filled with mineral trioxide aggregate. The radiographic follow up at 6 months showed arrest of root resorption and initiation of periapical healing in the absence of clinical symptoms and mobility. This was followed by advanced osseous regeneration and re-establishment of the periodontal space at 12 and 24 months. From the present case, it can be concluded that mineral trioxide aggregate obturation can be a viable option that can improve the healing outcomes in cases of severe inflammatory root resorption in young permanent teeth.
Journal of dentistry for children (Chicago, Ill.)
Resorption of the distal root of primary second molars is a common consequence of ectopically eru... more Resorption of the distal root of primary second molars is a common consequence of ectopically erupting permanent first molars. Here, we report 2 unusual cases of primary molar root resorption caused by reversible (self-correcting) ectopic eruption of premolar and canine teeth. In both cases, severe pathological resorption of the mesial roots of primary molars was detected on routine dental radiographs, and the affected molars remained asymptomatic until exfoliation. The purpose of this paper was, using 2 case studies, to highlight the possibility of primary root resorption as a sequel of self-corrected ectopic eruption in locations not frequently diagnosed or reported.
Journal of dentistry for children (Chicago, Ill.)
Inflammatory root resorption is a serious complication of dental trauma, which leads to progressi... more Inflammatory root resorption is a serious complication of dental trauma, which leads to progressive loss of the root structure. The purpose of this report was to present a case of perforating inflammatory root resorption in a previously traumatized young incisor tooth with incomplete root development. A 12-year-old girl, who had suffered a traumatic dental injury 4 years earlier, was referred with symptoms of pain and swelling in a permanent maxillary central incisor. The tooth had been root-filled and had thin dentinal walls and a wide open apex. During retreatment, a perforating resorption site was observed on the root's distal aspect. Because the entire root canal filling could not be removed, the resorption site was repaired with white mineral trioxide aggregate in the presence of the remaining gutta-percha. Clinical and radiographic follow-up was conducted for 36 months, demonstrating arrest of the resorptive process, regeneration of the periradicular tissues, and re-establ...
Journal (Canadian Dental Association), 2011
Inflammatory root resorption is a pathologic condition caused by several etiologic factors includ... more Inflammatory root resorption is a pathologic condition caused by several etiologic factors including traumatic dental injury. In this case report, we describe treatment of a maxillary lateral incisor affected by severe, perforating inflammatory root resorption. An 11-year-old patient presented with a previously traumatized, root-filled maxillary lateral incisor associated with pain, mobility and a sinus tract. Radiographic examination revealed a large periradicular lesion involving pathologic resorption of the apical region of the root. After removal of the root canal filling, the tooth was treated with intracanal calcium hydroxide for 2 weeks. The calcium hydroxide dressing was then removed and the entire root canal was filled with mineral trioxide aggregate. The endodontic access cavity was restored with composite resin. After 1 year, advanced osseous healing of the periradicular region had occurred and no clinical symptoms were apparent.
Journal of dentistry for children (Chicago, Ill.)
Resorption of the distal root of primary second molars is a common consequence of ectopically eru... more Resorption of the distal root of primary second molars is a common consequence of ectopically erupting permanent first molars. Here, we report 2 unusual cases of primary molar root resorption caused by reversible (self-correcting) ectopic eruption of premolar and canine teeth. In both cases, severe pathological resorption of the mesial roots of primary molars was detected on routine dental radiographs, and the affected molars remained asymptomatic until exfoliation. The purpose of this paper was, using 2 case studies, to highlight the possibility of primary root resorption as a sequel of self-corrected ectopic eruption in locations not frequently diagnosed or reported.
Dental Traumatology, 2010
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Papers by İrem Güzeler Demir