Mehmet Ertuğrul Çiftçi

A novel LED-based device for occlusal caries detection.

The aim of this in-vitro study was to compare the performance of laser-based (DIAGNOdent, KaVo, Biberach, Germany) and LED-based (Midwest Caries I.D., DENTSPLY Professional, New York, USA) caries detectors in the detection of occlusal caries in permanent molars. The study consisted of 129 visually sound or non-cavitated pits or fissures in 82 extracted permanent human molar teeth. Two trained examiners used the laser-based and LED-based caries detectors to examine the fissures for caries. The teeth were then sectioned at the surfaces suspected of containing occlusal caries and histologically evaluated using stereomicroscopy as a gold standard. Inter-examiner reliability of the caries detector examination was assessed using Cohen’s Kappa statistics. The sensitivity, specificity, and accuracy in diagnosing occlusal caries using the two devices were calculated according to appropriate cut-off scores. Receiver operating characteristic (ROC) curves were also determined to compare the diagnostic performance of the devices in occlusal caries diagnosis. The cut-off level of significance was taken as p = 0.005. Cohen’s Kappa showed substantial agreement for the laser-based caries detector (0.74), and almost perfect agreement for the LED-based (0.89) caries detector. The specificity of the laser-based device varied from 0.49 to 0.97 at T1 and T2. Its sensitivity varied from 0.33 to 0.65 at T1 and T2. The specificity of the LED-based device varied from 0.48 to 0.56 at T1 and T2. Its sensitivity varied from 0.65 to 0.84 at T1 and from 0.80 to 0.84 at T2. Taking the limitations of the current study into consideration, the DIAGNOdent laser pen was more accurate in determining when teeth were free of occlusal caries than was the Midwest Caries I.D. LED-based device, although the Midwest Caries I.D. device more often revealed the presence of occlusal caries than did the DIAGNOdent pen.

Does the Panoramic Radiography Have the Power to Identify the Gonial Angle in Orthodontics

Purpose. The objective of this study was to assess gonial angle under the angle classification by comparing panoramic radiograph and lateral cephalometric radiograph. Materials and Methods. 49 patients (25 males, 24 females) with an age range of 12–29 years participated in the present study. Subjects were retrospectively selected among those categorised as skeletal and dental Class I, II, and III malocclusion group. Using lateral cephalometric radiograph, mandibular and ramal planes were drawn and based on these planes. Gonial angle was determined from two tangents which were drawn from the inferior border of the mandible and posterior borders of the condyle and ramus of both sides in the panoramic radiographs. Multiple comparison tests (ANOVA) were used to determine differences between the three angle groups. Results. There were no significant differences between Class I, II, and III malocclusion group values of gonial angles determined by lateral cephalometric radiograph and panoramic radiographs (P > 0.05). Conclusion. Panoramic radiograph results were shown to be as reliable as lateral cephalometric radiograph in all angle classifications. Panoramic radiography can be used as an alternative radiographic technique to detect gonial angle in orthodontic patients.

An evaluation of factors associated with persistent primary teeth

The aim of the present study was to investigate the reasons for the persistence of primary teeth and also use panoramic radiography to determine the characteristics of persistence teeth. Four-hundred and twenty-six panoramic radiographies, which diagnosed one or more retained primary teeth, were selected from 100,577 panoramic radiographic image files from nine clinics and six different cities in Turkey. The selected radiographies were evaluated to determine the reasons for the persistence of primary teeth; furthermore, this study analyzed the characteristics of the retained primary teeth including tooth type, number, location, and root resorption, and whether, or not, the primary teeth showed evidence of pathological conditions, such as periodontal problems, caries, ankylosis, infra-occlusions, or tipping of the adjacent permanent teeth. Six hundred and seventy-seven retained primary teeth were determined in 426 patients (148 males and 278 females). Retained primary teeth were found most frequently in the mandible rather than the maxilla and the left side was more frequently affected than the right side. Level 1 was found as a most frequently encountered root resorption level. Within the limitation of the present study, the most common type of persistent primary teeth seen on the dental arch were mandibular primary second molars, followed by maxillary primary canines. The most frequent reason for the persistence was the congenital absence of successors to the primary teeth, followed by impaction of the successor teeth.

Detection of Second Mesiobuccal Canals in Maxillary First Molars Using a New Angle of Cone Beam Computed Tomography

Background The localization of the additional canal orifice is one of the primary factors influencing the success of endodontic treatment. To deal with this problem, several techniques that each have their own advantages and disadvantages have been discussed in the literature. Objectives The aim of the present in vitro study was to review a new approach to localizing second mesiobuccal (MB2) canals in maxillary first molars using cone beam computed tomography (CBCT). Patients and Methods The CBCT scans of 296 patients who were referred to the department of dentomaxillofacial radiology were included in the study. The presence of MB2 canals, the angle formed by the mesiobuccal, distobuccal, and palatal root canal orifices (∠MDP), and the angle formed by the mesiobuccal, distobuccal, and MB2 canal orifices (∠MDMB2) were evaluated on the axial section. Pearson correlation and multiple linear regression methods were used for all predictions. All of the analyses were performed using SPSS for windows version 22.0. A two-sided P value < 0.05 was defined as statistically significant. Results Of the 468 first molars, MB2 canals were observed in 296 subjects (141 females and 155 males). There were no statistically significant differences between females and males (P = 0.300). The ∠MDP and ∠MDMB2 were detected and evaluated. A moderate positive correlation was found between the ∠MDP and the ∠MDMB2. To predict the ∠MDMB2 values, it was shown that the ∠MDMB2 increased by 0.420 degrees when the ∠MDP increased by 1 degree. If the ∠MDP was greater than 90.95 degrees, there was a 78% probability that MB2 canals could be found. Conclusion The determination of the presence of MB2 in the maxillary first molars may be carried out using CBCT scans. If the ∠MDP was 91 degrees or greater, there was considered to be a higher probability that MB2 canals would be found in the endodontic cavity. Due to the positive correlation between the ∠MDP and the ∠MDMB2, the localization of MB2 canals may be easily performed in relation to the main MB canal.

Effects of voxel size and resolution on the accuracy of endodontic length measurement using cone beam computed tomography.

An accurate determination of the working length is indispensable for successful endodontic treatment. The aim of this study was to determine the influence of the voxel size and resolution of CBCT on measuring root canal working length. Thirty extracted single-rooted permanent teeth were used for this study. The working lengths of the teeth were determined by a researcher inserted a K-file into each canal until the tip became visible through the major foramen. The file was withdrawn until its tip was seen at the level of the coronal-most border of the major foramen under. The rubber stop was adjusted to the occlusal reference and the distance from the stop to the false tip was measured with digital calipers and recorded as the actual working length. The CBCT images were obtained with a Planmeca ProMax 3D Mid (Planmeca, Helsinki, Finland) using four sets of settings: from voxel size 0.5mm to voxel size 1.0mm. These measurements were compared with actual lengths (as a control group) using Analysis of Variance and the Dunnett Post Hoc Test. The Pearson correlation coefficient (r) and 95% confidence intervals were calculated to compare all measurement methods. The significance level was set at P<0.05. No significant difference was found among CBCT groups and working length. A highest correlation was found between the actual length and smallest voxel size and highest CBCT measurements (r=0.94). CBCT imaging can be used endodontic working length measurement and the smallest voxel size and highest resolution yielded more accurate results.

Florid cemento-osseous dysplasia: A rare case report evaluated with cone-beam computed tomography

A 29-year-old systemically healthy female patient presented to our department. Cone-beam computed tomographic images showed multiple well-defined sclerotic masses with radiolucent border in both right and left molar regions of the mandible. These sclerotic masses were surrounded by a thin radiolucent border. We diagnosed the present pathology as florid cemento-osseous dysplasia and decided to follow the patient without taking biopsy. For the patient, who did not have any clinical complaints, radiographic followupis recommended twice a year. The responsibility of the dentist is to ensure the follow-up of the diagnosed patients and take necessary measures for preventing the infections.

Biostimulation of mandibular condyle growth

Skeletal Class II malocclusion has been called the common orthodontic problem in orthodontic clinics. These malocclusions are often due to mandibular deficiency. Various fixed and removable functional appliances have been used for the treatment of skeletal Class II malocclusion in patients who are undergoing a pubertal growth spurt. The results obtained from human and experimental animal studies showed that functional treatment of skeletal Class II treatment enhances the backward and upward growth potential of the mandibular condyle, and this mechanism provides forward movement of the lower jaw. Many studies reported that the adaptive remodeling of condylar cartilage and glenoid fossa increases with the aid of mechanical forces sourced from a functional appliance. One of the most important factors in mandibular advancement is to provide the condylar cellular activity in a shorter treatment time. The duration of functional appliance therapy depends on several factors such as patient age, sex, severity of the skeletal problem, and appliance type. The functional treatment period varies between 6 and 24 months. The patients undergoing orthodontic treatment often complain about the length of treatment time. In many studies, different techniques such as low level laser, ultrasound stimulation, anabolic steroids, growth hormone, and cyclosporine have been used to reduce functional treatment time and stimulate the condylar cartilage and bone. The purpose of this review is to describe biostimulation of mandibular condyle growth and evaluate the various techniques for mandibular condyle biostimulation.

DİŞ HEKİMLİĞİNDE KONİK IŞINLI BİLGİSAYARLI TOMOGRAFİ KULLANIMI

Purpose: Cone Beam Computed Tomography (CBCT) is the most current and newest imaging method in dentistry. Since low radiation dose and true 3D image acquisition, use of CBCT is becoming increasingly common. The aim of this study is to determine demographic information and indications of the patients taken CBCT Material and Method: In the current study, a total of 843 patients’ CBCT (i-CAT; Imaging Sciences International, Hatfield, PA, USA). The patients were divided into subgroups according to their age, gender, and radiographic indications. The descriptive statistics was used to review the data. Result: A total of 843 patients’ CBCT were examined retrospectively. Out of the 843 patients, 453 were female and 390 were male. Average age of these patients was 29,7. 1/3 of the DVT was taken form 11 ages to 20 ages patients. Out of the 843 patients, 252 had partial or total edentulous jaws, 218 had orthodontic anomalies. TMJ disorders and impacted teeth were followed up them. Conclusion: The use of the CBCT has been increased day by day. Especially in implant and impacted teeth surgery and orthodontics, it widely used. In addition, CBCT’s were mostly taken from young patients

Evaluation of radiographic features of embedded primary molar roots in adult Turkish population

BACKGROUND The roots of primary molars were found in the permanent dentition without symptoms on the clinical or radiographic examination. However, their incidence could not be achieved on the current literature. OBJECTIVE The aim of this study is to evaluate the radiographic features of the embedded primary molar roots in adult dentulous patients in Turkey. MATERIALS AND METHODS The data, from 5000 adult patients, including panoramic radiographs and demographic information, were evaluated retrospectively. The prevalence and location of the primary molar roots in the jaws were determined, as well as the prevalence and location of the primary molar roots in the adjacent permanent root levels. RESULTS Among 5000 Turkish population dentulous patients, 20 retained primary molar roots (0.38%) were found in 19 ones. CONCLUSIONS The prevalence of the primary molar roots in the present study was found to be lower than that of the previous study. This finding may result from the larger amount of patient data that was evaluated in this study, which used panoramic radiographs.

Panoramik radyografta farklı baş pozisyonlarının radyomorfometrik indekslere etkisi

Amac: Panoramik ve radyografide degisen horizontal mandibular kortikal genislik (mental indeks) ve panoramik mandibular indeks olcumleri uzerindeki etkilerini incelemektir.Gerec ve Yontem: Kadavradan alinan kafatasinin dogal bas hareketlerini [saga-sola cevirme hareketi (X duzlemi), asagi-yukari egme hareketi (Y duzlemi) ve saga-sola devirme hareketi (Z duzlemi)] uc boyutlu olarak taklit etmesine olanak saglayan bir duzenek hazirlandi. Bu duzenekte her duzlemde (+) ve (-) yonlerde 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ve 15 derecelerde toplam 66 dijital panoramik radyogram elde edildi. Her radyografide mental indeks ve panoramik mandibular indeks olcumleri yapildi.Bulgular: X duzleminde basin acisi 7 derece ve ustune ciktiginda, Y duzleminde (+) yonde 7 derecenin ustune ciktiginda, (-) yonde ise aci 9 ve 11 derece degistiginde, Z duzleminde hem (+) hem de (-) yonde aci 6 ve 7 derece arttiginda yapilan mental indeks olcumleriyle ideal bas pozisyonu olcumleri arasinda istatistiksel olarak anlamli farklilik belirlendi. Panoramik mandibular indeks olcumlerinde ise X duzleminde olcumlerin bazilarinda, Y duzleminde basin (+) yonde hareketi sirasinda alinan panoramik radyografilerde ozellikle aci 3 derece uzerine ciktiginda yapilan olcumlerle, Z duzleminde (+) yonde acinin 1, 6 ve 7 derece artisindaki olcumler ideal bas pozisyonundaki olcumlerden farkli olarak bulundu. Sonuclar: Panoramik radyografideki olcumlerin dogru olabilmesi icin hastanin basinin uygun pozisyonlandirilmasi gerekmektedir.