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Toplu G, Altinel D, Evin ŞG, Yiğit E, Toplu SG, Serin M. Impact of Different Osteotomy Techniques on Bone Reserve in the Osteotomy Line in Sagittal Split Osteotomy: Experimental In Vitro Study in Caprine Mandible Model. J Craniofac Surg 2023; 34:e785-e788. [PMID: 37646346 DOI: 10.1097/scs.0000000000009656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 06/20/2023] [Indexed: 09/01/2023] Open
Abstract
OBJECTIVE The objective of this study was to investigate of the effect of piezzo and conventional osteotomy techniques on bone reserve in the osteotomy line and comminuted fracture ratios that is able to compromise bone to bone contact negatively. METHODS Bilateral sagittal split ramus osteotomy was performed on 12 fresh male Thracian curly caprine mandible. In the first group (n: 12) osteotomies were performed with piezzo device. In the second group (n: 12) osteotomies were performed with micromotor and manual osteotomes. Operative time was measured. The number of comminuted fractures, length and width of the osteotomy, and the space between the osteotomy lines was evaluated from 3-dimensional computed tomography scans. RESULTS The mean value of procedure duration was 320.4±10.76 seconds for piezo osteotomy and 238.8±8.29 seconds for conventional micromotor ( P <0.0001). Number of comminuted fractures was 1.41±1.3 in piezoelectric group, 1.5±1.3 in conventional group and the difference was not statistically significant (p: 0,88). Osteotomy lengths and widths were 35.58±5.2, 2.196±1.9 and 36.23±5.05, 2.27±1.85 in the piezzo and conventional groups, respectively. (p lengths :0,75; p widths :0,92) The volume of the bony interface between the distal and proximal segments of the mandible after osteotomy was 166.3±184.2 mm 3 in the piezzo group and 163.5±129.3 mm 3 in the conventional group (p: 0,96). CONCLUSION The piezo surgery and the conventional osteotomy were found to be similar in terms of the gap between the distal and proximal mandible and the number of comminuted fractures. The duration to perform the conventional osteotomy was found to be shorter than the piezo surgery.
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Affiliation(s)
| | - Dinçer Altinel
- Health Sciences University, Istanbul Training and Research Hospital, Plastic, Reconstructive and Aesthetic Surgery Department
| | - Şeyda Güray Evin
- Medeniyet University, Goztepe Prof. Dr. Suleyman Yalcin Training and Research Hospital, Plastic, Reconstructive and Aesthetic Surgery Department
| | - Enes Yiğit
- Health Sciences University, Istanbul Training and Research Hospital, Ear, Nose and Throat Department, Istanbul, Turkey
| | | | - Merdan Serin
- Medeniyet University, Goztepe Prof. Dr. Suleyman Yalcin Training and Research Hospital, Plastic, Reconstructive and Aesthetic Surgery Department
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Özdemir O, Mahmutoğlu AS, Yiğit E, Çakır M, Yiğit Ö. Do the Age of Implantation, the Widths of Internal Acoustic Canal and Bony Cochlear Nerve Canal Affect the Auditory Performance of Primary School Children with Bilateral Cochlear Implants? Turk Arch Otorhinolaryngol 2022; 60:95-101. [PMID: 36105530 PMCID: PMC9435394 DOI: 10.4274/tao.2022.2021-9-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2021] [Accepted: 05/04/2022] [Indexed: 12/01/2022] Open
Abstract
Objective: To reveal the correlation between implantation age, the internal acoustic canal (IAC) width, bony cochlear nerve canal (BCNC) width, and auditory performance in primary school children with bilateral cochlear implantation (CI). Methods: Preoperative IAC and BCNC widths of 57 pre-lingually deaf children aged 7–11 years who had previously undergone bilateral CI in our institution were reviewed and cut-off values were calculated. Twenty-four patients who had additional problems and could not attend school and those who refused to participate in the study were excluded. The remaining 33 were invited to the hospital, and their speech perception tests, and language development scores were analyzed (16 of 33 patients had been operated on before the age of 24 months). Results: The cut-off values calculated from the 114 ears of 57 patients were 3.86 mm for IAC width and 1.56 mm for BCNC width. The auditory performances of the 33 patients after CI were not significantly different in the narrow and normal width groups. However, speech perception test results, and language development scores of patients implanted before the age of 24 months were significantly higher. Conclusion: There are some studies showing that children with bilateral sensorineural hearing loss have narrower IAC and BCNC widths. However, we concluded that the widths of the IAC and the bone cochlear nerve canal did not affect auditory performance. We found that implantation age is the single most important determinant of speech-language development after CI.
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Yiğit E, Erdil D, Çınar Z, Can E, Yiğit Ö. Effects of Oral Isotretinoin Therapy on Nasal Dryness and Nasal Obstruction in Patients with Acne Vulgaris: Objective and Subjective Assessments Based on the Dose and Duration of Therapy. Istanbul Med J 2022. [DOI: 10.4274/imj.galenos.2021.99835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Çınar Z, Emre U, Gül M, Yiğit Ö, Mammadov E, Yiğit E, Gül S, Cırık HR. Is Decorin a Promising New Agent for Facial Nerve Regeneration? An Experimental Study. Audiol Neurootol 2021; 26:195-205. [PMID: 33677432 DOI: 10.1159/000512003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 09/28/2020] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE The aim of this study was to investigate the effects of systemic administration of decorin (DC) on facial nerve (FN) regeneration. METHODS A total of 32 female albino Wistar rats were divided into 4 groups: control (C) group: no bilateral FN neurorrhaphy (B-FNN), no DC application, sham-operated group: B-FNN without DC application, DC group: DC application without B-FNN, and B-FNN + DC group: B-FNN and DC application. Nerve conduction studies were performed before and after skin incisions at 1st, 3rd, 5th, and 7th weeks in all groups. The amplitude and latency of compound muscle action potentials were recorded. FN samples were obtained and were investigated under light microscopy and immunohistochemical staining. The nerve and axon diameter, number of axons, H score, Schwann cell proliferation, and myelin and axonal degeneration were recorded quantitatively. RESULTS In the sham group, the 3rd and 5th postoperative week, amplitude values were significantly lower than those of the B-FNN + DC group (p < 0.05). Nerve diameters were found to be significantly larger in the sham, DC, and B-FNN + DC groups than in the C group (p < 0.05). The number of axons, the axon diameter, and the H scores were found to be significantly higher in the B-FNN + DC group than in the sham group (p < 0.05). The Schwann cell proliferation, myelin degeneration, and axonal degeneration scores were significantly lower in the B-FNN + DC group than in the sham group (p < 0.05). CONCLUSION Electrophysiological and histopathological evaluation revealed the potential benefits provided by DC. This agent may increase FN regeneration.
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Affiliation(s)
- Zehra Çınar
- Department of Otorhinolaryngology & Head and Neck Surgery, İstanbul Training and Research Hospital, Istanbul, Turkey,
| | - Ufuk Emre
- Department of Neurology, Istanbul Training and Research Hospital, I, Istanbul, Turkey
| | - Mehmet Gül
- Department of Histology and Embryology, İnönü University Faculty of Medicine, Malatya, Turkey
| | - Özgür Yiğit
- Department of Otorhinolaryngology & Head and Neck Surgery, İstanbul Training and Research Hospital, Istanbul, Turkey
| | - Elshan Mammadov
- Department of Otorhinolaryngology & Head and Neck Surgery, İstanbul Training and Research Hospital, Istanbul, Turkey
| | - Enes Yiğit
- Department of Otorhinolaryngology & Head and Neck Surgery, Republic of Turkey Ministry of Health Luleburgaz State Hospital, Kırklareli, Turkey
| | - Semir Gül
- Department of Histology and Embryology, İnönü University Faculty of Medicine, Malatya, Turkey
| | - Hilal Rumeyza Cırık
- Department of Histology and Embryology, İnönü University Faculty of Medicine, Malatya, Turkey
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Abstract
Introduction COVID-19 is a pandemic disease known with one of the symptoms is sudden onset anosmia. This symptom sometimes may be the only sign of the disease, therefore it must be research widely. Objective We aim to evaluate odor dysfunction in COVID-19 patients objectively and safely without any risk of transmitting the disease. Methods The odor threshold test was performed on 105 patients hospitalized at the XXXX Training and Research Hospital on the COVID-19 pandemic service before any treatment began. Odor threshold was tested using a modification of the Connecticut Chemosensory Clinical Research Center olfactory function test. COVID-19 signs and symptoms, PCR test results, thorax computed tomography (CT) findings, and length of hospital stay were recorded. Odor tests were scored between 0–8, 0–1 anosmia, 2–3 severely hyposmia, 4 moderate hyposmia, 5 mild hyposmia, 6 and above normosmia. Results Forty-one (39%) of the 105 patients were diagnosed with COVID-19 after the PCR results. Patients with an odor threshold score < 5 were classified as “Smell-Impaired Group”, patients with an odor threshold score ≥ 5 were placed in “Smell Intact Group”. The incidence of female patients in smell-impaired group was significantly higher (p ˂ 0.05). The proportion of patients who were PCR-positive for COVID-19 in smell-impaired group was significantly higher (p ˂ 0.05) than in smell intact group. Among patients with an odor threshold score from 0 to 1 (anosmic; n = 15), 12 (80%) demonstrated PCR positivity (p < 0.0001). Conclusion Anosmia can be predictive for coronavirus disease. Odor threshold test can be helpful for diagnosis.
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Affiliation(s)
- Nihal Seden
- Istanbul Training and Research Hospital, Otorhinolaryngology - Head and Neck Surgery Department, İstanbul, Turkey.
| | - Enes Yiğit
- Istanbul Training and Research Hospital, Otorhinolaryngology - Head and Neck Surgery Department, İstanbul, Turkey
| | - Özgür Yiğit
- Istanbul Training and Research Hospital, Otorhinolaryngology - Head and Neck Surgery Department, İstanbul, Turkey
| | - İsmail Kaygısız
- Istanbul Training and Research Hospital, Otorhinolaryngology - Head and Neck Surgery Department, İstanbul, Turkey
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Benna M, Bougher SW, Lee Y, Roeten KJ, Yiğit E, Mahaffy PR, Jakosky BM. Global circulation of Mars' upper atmosphere. Science 2019; 366:1363-1366. [PMID: 31831665 DOI: 10.1126/science.aax1553] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Accepted: 10/28/2019] [Indexed: 11/02/2022]
Abstract
The thermosphere of Mars is the interface through which the planet is continuously losing its reservoir of atmospheric volatiles to space. The structure and dynamics of the thermosphere is driven by a global circulation that redistributes the incident energy from the Sun. We report mapping of the global circulation in the thermosphere of Mars with the Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft. The measured neutral winds reveal circulation patterns simpler than those of Earth that persist over changing seasons. The winds exhibit pronounced correlation with the underlying topography owing to orographic gravity waves.
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Affiliation(s)
- M Benna
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD, USA. .,Center for Space Sciences and Technology, University of Maryland Baltimore County, Baltimore, MD, USA
| | - S W Bougher
- Department of Climate and Space Science and Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Y Lee
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD, USA.,Center for Space Sciences and Technology, University of Maryland Baltimore County, Baltimore, MD, USA
| | - K J Roeten
- Department of Climate and Space Science and Engineering, University of Michigan, Ann Arbor, MI, USA
| | - E Yiğit
- Department of Physics and Astronomy, George Mason University, Fairfax, VA, USA
| | - P R Mahaffy
- Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - B M Jakosky
- Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, USA
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Yiğit E, Edizer DT, Durna YM, Altay MA, Yiğit Ö. Satisfaction with Life among Mothers of Pediatric Cochlear Implant Candidates: The Impact of Implant Operation and Sociodemographic Factors. J Int Adv Otol 2018; 14:202-207. [PMID: 30100548 DOI: 10.5152/iao.2018.5531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVES To evaluate the satisfaction with life among mothers of pediatric cochlear implant candidates regarding implant surgery and sociodemographic factors. MATERIALS AND METHODS Mothers of 160 pediatric patients with profound sensorineural hearing loss who underwent unilateral cochlear implant surgery were included. A questionnaire form with items on sociodemographic-familial characteristics and Satisfaction with Life Scale (SWLS) was employed via face-to-face interview method before and 12 months after the implant surgery. RESULTS The SWLS scores significantly improved after the implant surgery [from 19.1 (7.0) to 28.9 (4.0), p<0.000]. Being unemployed vs. employed [17.9 (6.9) vs. 24.0 (5.3), p=0.000], having another child with hearing disability [13.5 (5.7) vs. 19.7 (6.9), p=0.001], younger (12-24 months) vs. older (>24 months) age of the child at the time of implant surgery [7.1 (0.4) vs. 19.7 (6.6), p=0.001], absence vs. presence of regular follow-up visits [13.0 (0.0) vs. 19.4 (7.1), p=0.002], and presence vs. absence of change in social life after the diagnosis of disease [17.3 (6.5) vs. 20.9 (7.1), p=0.001] were associated with significantly lower SWLS scores among mothers. SWLS scores were positively correlated with patient's age at the time of implant surgery (r=0.206, p=0.009), whereas negatively correlated with the number of household members (r=-0.406, p=0.000) and number of children (r=-0.310, p=0.000). CONCLUSION In conclusion, our findings revealed the association of cochlear implantation with a significant increase in mother's life satisfaction, despite the unemployment, presence of another child with hearing disability, and crowded household. Our findings emphasize on the consideration of family systems with special attention to mother's emotional experiences and occupational competence in the intervention programs.
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Affiliation(s)
- Enes Yiğit
- Department of Otolaryngology Head and Neck Surgery, Istanbul Training and Research Hospital, Istanbul, Turkey
| | - Deniz Tuna Edizer
- Department of Otolaryngology Head and Neck Surgery, Istanbul Training and Research Hospital, Istanbul, Turkey
| | - Yusuf Muhammed Durna
- Department of Otolaryngology Head and Neck Surgery, Istanbul Training and Research Hospital, Istanbul, Turkey
| | - Mengühan Araz Altay
- Clinic of Child and Adolescent Psychiatry, Edirne Sultan I. Murat State Hospital, Edirne, Turkey
| | - Özgür Yiğit
- Department of Otolaryngology Head and Neck Surgery, Istanbul Training and Research Hospital, Istanbul, Turkey
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Terzi S, Dursun E, Özgür A, Yiğit E, Özergin-Coşkun Z, Çelebi-Erdivanl Ö, Demirci M, Çeliker M. Status of Neutrophils, Lymphocytes and Platelets in Patients with Recurrent Aphthous Stomatitis: A Retrospective Study. Iran J Otorhinolaryngol 2016; 28:421-424. [PMID: 28008393 PMCID: PMC5168574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
INTRODUCTION The aim of this study was to evaluate the neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), and mean platelet volume (MPV) in patients with recurrent aphthous stomatitis (RAS). MATERIALS AND METHODS Eighty patients who were diagnosed with RAS between January 2014 and January 2016 were included in this study. Eighty age- and gender-matched healthy subjects were also enrolled as a control group. Neutrophil, lymphocyte, and platelet counts were compared between groups, in addition to NLR, PLR, and MPV values. RESULTS There was no significant difference in terms of lymphocyte count, platelet count, PLR, or MPV values between the two groups (P>0.05). However, white blood count, neutrophil count, and NLR were significantly higher in patients with RAS compared with the control group (P<0.05). CONCLUSION The present study revealed an increased NLR among RAS patients compared with healthy controls. This suggests that development of RAS involves an inflammatory process. We believe that NLR could be used as a cheap and simple marker of inflammation.
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Affiliation(s)
- Suat Terzi
- Department of Otorhinolaryngology, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey.,Corresponding Author: Department of Otorhinolaryngology, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey. Tel: +90 464 213 0491, E-mail:
| | - Engin Dursun
- Department of Otorhinolaryngology, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey.
| | - Abdulkadir Özgür
- Department of Otorhinolaryngology, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey.
| | - Enes Yiğit
- Department of Otorhinolaryngology, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey.
| | - Zerrin Özergin-Coşkun
- Department of Otorhinolaryngology, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey.
| | - Özlem Çelebi-Erdivanl
- Department of Otorhinolaryngology, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey.
| | - Münir Demirci
- Department of Otorhinolaryngology, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey.
| | - Metin Çeliker
- Department of Otorhinolaryngology, Medical Faculty, Recep Tayyip Erdogan University, Rize, Turkey.
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Özgür A, Müjdeci B, Terzi S, Özergin Coşkun Z, Yiğit E, Dursun E. Wideband Tympanometry Normative Data for Different Age Groups in Turkish Population. J Int Adv Otol 2016; 12:82-6. [PMID: 27340989 DOI: 10.5152/iao.2015.1408] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE Studies on the use of wideband tympanometry (WBT) for the evaluation of middle ear pathologies have been increasing gradually in recent years. However, studies regarding normative data of WBT are not sufficient. The aim of this study was to determine normative values of WBT for different age groups in Turkish population. MATERIALS AND METHODS One hundred fifty volunteers from five age-related groups were included in this study. Values of resonance frequency (RF), absorbance percentage according to frequency, maximum absorbance ratio, and maximum absorbance frequency were obtained using WBT. Measurements were recorded at a pressure of 0 decapascal (daPa) using a sound stimulus given at 90±3 decibel sound pressure level (dB SPL). RESULTS The RF was detected to be significantly lower only in the group of subjects in the age range of 0-1 month. The absorbance value at 250 Hz was detected to be significantly higher in the age groups of 0-1 month and 1 month-2 years than in the other groups. CONCLUSION We believe that the findings obtained in this study would be helpful in determining normative data regarding WBT; by the determination of this normative data, the clinical use of WBT would become widespread.
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Affiliation(s)
- Abdulkadir Özgür
- Department of Otorhinolaryngology, Recep Tayyip Erdoğan University School of Medicine, Rize, Turkey.
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Pilevneli C, Kızgut S, Toroğlu İ, Çuhadaroğlu D, Yiğit E. Open and closed circuit dry grinding of cement mill rejects in a pilot scale vertical stirred mill. POWDER TECHNOL 2004. [DOI: 10.1016/j.powtec.2003.12.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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