1.Predictor factors of 1-rooted mandibular second molars on complicated root and canal anatomies of other mandibular teeth
Restorative Dentistry & Endodontics 2024;49(1):e2-
Objectives:
This study aimed to determine the effects of 1-rooted mandibular second molar (MnSM) teeth on root canal anatomy complexities of the mandibular central incisor (MnCI), mandibular lateral incisor (MnLI), mandibular canine (MnCn), mandibular first premolar (MnFP), mandibular second premolar (MnSP), and mandibular first molar (MnFM) teeth.
Materials and Methods:
Cone-beam computed tomography images of 600 patients with full lower dentition were examined. Individuals with 1-rooted MnSMs were determined, and the complexity of root canal anatomy of other teeth was compared with individuals without 1-rooted MnSMs (Group-1; subjects with at least one 1-rooted MnSM, Group-2; subjects with more than a single root in both MnSMs). A second canal in MnCIs, MnLIs, MnCns, MnFPs, and MnSPs indicated a complicated root canal. The presence of a third root in MnFMs was recorded as complicated.
Results:
The prevalence of 1-rooted MnSMs was 12.2%, with the C-shaped root type being the most prevalent (9%). There were fewer complicated root canals in MnCIs (p = 0.02), MnLIs (p < 0.001), and MnFPs (p < 0.001) in Group 1. The other teeth showed no difference between the groups (p > 0.05). According to logistic regression analysis, 1-rooted right MnSMs had a negative effect on having complex canal systems of MnLIs and MnFPs. Left MnSMs were explanatory variables on left MnLIs and both MnFPs.
Conclusions
In individuals with single-rooted MnSMs, a less complicated root canal system was observed in all teeth except the MnFMs.
2.Osteoblastoma of C2 Corpus: 4 Years Follow-up.
Cem YILMAZ ; Erdinc CIVELEK ; Hakan CANER ; Erdinc AYDIN ; Aydin GERILMEZ ; Nur ALTINORS
Asian Spine Journal 2012;6(2):136-139
Osteoblastomas are rare neoplasms of the spine. The majority of the spinal lesions arise from the posterior elements and involvement of the corpus is usually by extension through the pedicles. An extremely rare case of isolated C2 corpus osteoblastoma is presented herein. A 9-year-old boy who presented with neck pain and spasmodic torticollis was shown to have a lesion within the corpus of C2. He underwent surgery via an anterior cervical approach and the completely-resected mass was reported to be an osteoblastoma. The pain resolved immediately after surgery and he had radiologic assessments on a yearly basis. He was symptom-free 4 years post-operatively with benign radiologic findings. Although rare, an osteoblastoma should be considered in the differential diagnosis of neck pain and torticollis, especially in patients during the first two decades of life. The standard treatment for osteoblastomas is radical surgical excision because the recurrence rate is high following incomplete resection.
Child
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Diagnosis, Differential
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Follow-Up Studies
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Humans
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Neck Pain
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Osteoblastoma
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Osteoma, Osteoid
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Recurrence
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Spine
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Torticollis
3. Sequence analysis of Turkish field strains of bovine torovirus shows unique amino acid changes in the partial M gene
Hakan AYDIN ; Mehmet Ozkan TIMURKAN ; Gulizar Acar KIRMIZI
Asian Pacific Journal of Tropical Biomedicine 2019;9(3):129-134
Objective: To investigate the presence, prevalence and phylogenetic classification of bovine torovirus (BToV). Methods: Stool samples from 72 calves, which were negative for primary gastroenteritis agents, were examined with the nested PCR method by using BToV M gene-specific primers. Results: BToV was detected in 12 (16.7%) out of 72 samples. Phylogenetic analysis was performed using nucleotide and amino acid sequences. In the phylogenetic tree, European, American, Far East and Turkish strains were found to be divided into different branches. Interestingly, it was observed that Turkish strains were divided into two subgroups. Considering the amino acid sequences of these strains having differences at nucleotide level, the change at the 3rd amino acid of the partial M gene in Turkish strains has made Turkish strains different from all other strains. Similarly, the differences were observed in the 18th, 20th, 63rd and 93rd amino acids of the partial M gene only in Turkish field strains. Conclusions: This study revealed that Turkish strains of BToV constitute a separate phylogenetic group and can be divided into two subgroups. In addition, BToV was found to be a common pathogen causing diarrhea in calves in Turkey, and it is a necessity to consider BToV in cases of diarrhea with unknown cause.
4.Bilateral Suprascapular Nerve Entrapment.
Teoman AYDIN ; Nihal OZARAS ; Sevgi TETIK ; Erhan EMEL ; Hakan SEYITHANOGLU
Yonsei Medical Journal 2004;45(1):153-156
Bilateral suprascapular nerve entrapment syndrome is very rare. It presents with shoulder pain, weakness and atrophy of the supraspinatus and infraspinatus muscles. We present a twenty-year old man having a history of bilateral shoulder pain associated with weakness. Electromyographic studies revealed signs of a lesion that caused a neupraxic state of the left suprascapular nerve, moderate axonal loss of the right suprascapular nerve and denervation of the right suprascapular muscle. The patient was treated with physical and medical therapy. Due to worsening of the symptoms, a surgical operation was performed by the excision of the transverse scapular ligaments bilaterally. His pain, weakness and atrophy had diminished on examination six weeks later. Suprascapular nerve entrapment should be considered in patients with shoulder pain, particularly those with weakness and atrophy of the supraspinatus and infraspinatus muscles.
Adult
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*Back
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Human
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Magnetic Resonance Imaging
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Male
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Muscle Weakness/etiology/*pathology
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Muscular Atrophy/etiology/*pathology
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Nerve Compression Syndromes/complications/*pathology
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Pain/etiology/pathology
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*Shoulder
5.Total thyroidectomy is safer with identification of recurrent laryngeal nerve.
Hakan CANBAZ ; Musa DIRLIK ; Tahsin COLAK ; Koray OCAL ; Tamer AKCA ; Oner BILGIN ; Bahar TASDELEN ; Suha AYDIN
Journal of Zhejiang University. Science. B 2008;9(6):482-488
OBJECTIVETo investigate the effect of recurrent laryngeal nerve (RLN) identification on the complications after total thyroidectomy and lobectomy.
METHODSTotal 134 consecutive patients undergoing total thyroidectomy or thyroid lobectomy from January 2003 to November 2004 were investigated retrospectively. Patients were divided into two groups: RLN identified (Group A) or not (Group B). The two groups were compared for RLN injury and hypocalcaemia.
RESULTSThe numbers of patients and nerves at risk were 71 and 129 in Group A, and 63 and 121 in Group B, respectively. RLN injury in Group A (0) was significantly lower than that in Group B (5 [7.9%]) patients, 7 [5.8%] nerves) for the numbers of patients (P=0.016) and nerves at risk (P=0.006). Temporary hypocalcaemia was significantly higher in Group A than in Group B (14 [24.1%] vs 6 [10.3%], P=0.049). Permanent complications in Group B were significantly higher than those in Group A (13 [20.6%] vs 4 [5.6%], P=0.009).
CONCLUSIONRLN injury was prevented and permanent complications were decreased by identifying the whole course and branches of the recurrent laryngeal nerve during total thyroidectomy.
Adult ; Dissection ; adverse effects ; methods ; Female ; Goiter ; surgery ; Goiter, Nodular ; surgery ; Humans ; Male ; Middle Aged ; Postoperative Complications ; etiology ; prevention & control ; Recurrent Laryngeal Nerve ; anatomy & histology ; Recurrent Laryngeal Nerve Injuries ; Retrospective Studies ; Risk Factors ; Safety ; Thyroid Neoplasms ; surgery ; Thyroidectomy ; adverse effects ; methods
6.Drainage after total thyroidectomy or lobectomy for benign thyroidal disorders.
Tahsin COLAK ; Tamer AKCA ; Ozgur TURKMENOGLU ; Hakan CANBAZ ; Bora USTUNSOY ; Arzu KANIK ; Suha AYDIN
Journal of Zhejiang University. Science. B 2008;9(4):319-323
OBJECTIVEThis prospective randomized clinical trial was conducted to evaluate the necessity of drainage after total thyroidectomy or lobectomy for benign thyroidal disorders.
METHODSA total of 116 patients who underwent total thyroidectomy or lobectomy for benign thyroidal disorders were randomly allocated to be drained or not. Operative and postoperative outcomes including operating time, postoperative pain assessed by visual analogue scale (VAS), total amount of intramuscular analgesic administration, hospital stay, complications, necessity for re-operation and satisfaction of patients were all assessed.
RESULTSThe mean operating time was similar between two groups (the drained and non-drained groups). The mean VAS score was found to be significantly low in the non-drained group patients in postoperative day (POD) 0 and POD 1. The mean amount of intramuscular analgesic requirement was significantly less in the non-drained group. One case of hematoma, two cases of seroma and three cases of transient hypoparathyroidism occurred in the non-drained group, whereas one case of hematoma, two cases of seroma, two cases of wound infections and two cases of transient hypoparathyroidism occurred in the drained group. No patient needed re-operation for any complication. The mean hospital stay was significantly shorter and the satisfaction of patients was superior in the non-drained group.
CONCLUSIONThese findings suggest that postoperative complications cannot be prevented by using drains after total thyroidectomy or lobectomy for benign thyroid disorders. Furthermore, the use of drains may increase postoperative pain and the analgesic requirement, and prolong the hospital stay. In the light of these findings, the routine use of drains might not be necessary after thyroid surgery for benign disorders.
Adult ; Drainage ; methods ; Female ; Hematoma ; prevention & control ; Hospitalization ; Humans ; Male ; Middle Aged ; Pain ; Postoperative Complications ; prevention & control ; Prospective Studies ; Surgical Procedures, Operative ; methods ; Thyroid Diseases ; surgery ; Thyroidectomy ; methods ; Treatment Outcome
7.Clinical and inflammatory response to antiviral treatments in dogs with parvoviral enteritis
Nergis ULAS ; Yunusemre OZKANLAR ; Seckin OZKANLAR ; Mehmet Ozkan TIMURKAN ; Hakan AYDIN
Journal of Veterinary Science 2024;25(1):e11-
Background:
Canine parvoviral enteritis (CPE) is a fatal disease worldwide. The treatment of CPE is based mainly on supportive and symptomatic treatment. Antiviral addition to the treatment may result in a higher survival.
Objectives:
This study evaluated the effects of antiviral treatments with a standardized treatment (ST) on the clinical and inflammatory response of dogs with naturally occurring CPE.
Methods:
Twenty-eight dogs with CPE caused by canine parvovirus type 2 were divided randomly into treatment groups. The ST group received fluid, antibiotic, antiemetic, and deworming treatments. The antiviral treatment groups received the same ST with an additional antiviral drug, recombinant feline interferon omega (rFeIFN-ω), oseltamivir (OSEL) or famciclovir (FAM).
Results:
Compared to the healthy control, the tumor necrosis factor-α, interleukin-1β, interferon (IFN)-α, IFN-γ, haptoglobin, and C-reactive protein values were high (p < 0.05) on day zero. At presentation, mild lymphopenia, neutropenia, and a high neutrophil to lymphocyte (LYM) ratio (NLR) were also observed. Adding rFeIFN-ω to the ST produced the best improvement in the clinical score with a decreased NLR, while leucocytes remained low and inflammatory markers stayed high on day three. The survival rates of the groups were 85.7% in ST+IFN, 71.4% in ST+OSEL, 71.4% in ST+FAM, and 57.1% in ST groups on day seven.
Conclusions
Antiviral drugs may be valuable in treating CPE to improve the clinical signs and survival. In addition, the decrease in NLR in favor of LYM may be an indicator of the early prognosis before the improvement of leukocytes, cytokines, and acute phase proteins in CPE.
8.The clinical presentation and diagnosis of ketamine-associated urinary tract dysfunction in Singapore.
Jacklyn YEK ; Palaniappan SUNDARAM ; Hakan AYDIN ; Tricia KUO ; Lay Guat NG
Singapore medical journal 2015;56(12):660-quiz 665
Ketamine is a short-acting anaesthetic agent that has gained popularity as a 'club drug' due to its hallucinogenic effects. Substance abuse should be considered in young adult patients who present with severe debilitating symptoms such as lower urinary tract symptoms, even though the use of controlled substances is rare in Singapore. Although the natural history of disease varies from person to person, a relationship between symptom severity and frequency/dosage of abuse has been established. It is important to be aware of this condition and have a high degree of clinical suspicion to enable early diagnosis and immediate initiation of multidisciplinary and holistic treatment. A delayed diagnosis can lead to irreversible pathological changes and increased morbidity among ketamine abusers.
Adult
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Cystitis
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drug therapy
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Cystoscopy
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Female
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Fluoroscopy
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Humans
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Ketamine
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adverse effects
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Lower Urinary Tract Symptoms
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chemically induced
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Male
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Singapore
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Substance-Related Disorders
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complications
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Tomography, X-Ray Computed
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Ultrasonography
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Urinary Tract
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drug effects
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physiopathology
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Young Adult