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BACKGROUND: We have evaluated the effects of taurine and aqueous garlic extract (AGE) as a dietary supplement on osteoporotic fracture (OPF) healing in the ovariectomized rat femur fracture model. METHODS: In this experimental animal study,twenty-four osteoporosis-remodeled female Wistar albino rats were randomly divided into 3 groups (n: 8) according to their supplemented diet; control, taurine, and AGE groups. Unilateral femur middiaphysis mini-open osteotomy was stabilized with Kirschner wires. Six weeks after osteotomy, the rats were sacrificed before the femurs were harvested and OPF healing was evaluated with biochemical, histologic, microcomputed-tomography, and scintigraphic methods. RESULTS: As an indicator of the antiosteoporotic effect, the calcium levels of the taurine group were significantly lower than the AGE and control groups in biochemical analyzes (p < 0.01). In histological studies, the new bone diameter and new bone volume values of the taurine group were significantly higher than the control group (p = 0.002 and p = 0.032, respectively), while higher trabecular-compact callus was observed in the taurine and AGE groups, respectively, compared to the control group. In morphological analyses, taurine and AGE groups had significantly higher bone volume/tissue volume, trabecular number, bone surface density, and lower trabecular separation than the control group (p < 0.05). The scintigraphic imaging showed a significant increase in osteoblastic activity of the taurine group compared to the control group (p = 0.005). DISCUSSION: Taurine and AGE have positive anabolic effects, respectively, on the healing of OPFs, demonstrated by biochemical, histological, morphological, and scintigraphic methods.
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Ajo , Fracturas Osteoporóticas , Femenino , Animales , Ratas , Humanos , Fracturas Osteoporóticas/patología , Taurina/farmacología , Taurina/uso terapéutico , Ratas Wistar , Densidad Ósea , Antioxidantes , Dieta , Suplementos Dietéticos , OvariectomíaRESUMEN
OBJECTIVE: To investigate subjective throat symptoms with the Qualities of Sore Throat Index (QuaSTI) in adults with nasal septum deviation. STUDY DESIGN: Prospective study. SETTING: Baskent University Ankara Hospital. METHODS: Group 1 included patients with septum deviation. Preoperative data were obtained through evaluation of subjective nasal obstruction with the NOSE (Nasal Obstruction Symptom Evaluation) and throat symptoms with the QuaSTI (group 1a). After 3 months, the same patient group was reevaluated with the NOSE and QuaSTI to obtain postoperative data (group 1b). Group 2 was formed of healthy volunteers with no nasal obstruction. RESULTS: The mean ± SD and median (range) values of the QuaSTI total score were 33.39 ± 29.50 and 18.5 (0-90) in group 1a, 7.49 ± 4.31 and 7 (0-18) in group 2, and 7.58 ± 9.24 and 4.50 (0-49) in group 1b (group 1a vs 2, P < .001; group 1a vs 1b, P < .0001). A significant difference was determined between groups 1a and 2 with respect to the QuaSTI sensory score (26.58 ± 23.54 and 18 [0-73] vs 6.51 ± 3.58 and 7 [0-15], P < .001, respectively) and between groups 1a and 1b for the QuaSTI functional score (6.03 ± 6.62 and 3 [0-20] vs 1.50 ± 2.47 and 0.50 [0-13], P = .004). No significant difference was found between groups 1a and 2 in terms of the QuaSTI emotional score (P = .126). CONCLUSION: Various persistent sensory and functional throat symptoms can be seen in patients experiencing nasal obstruction associated with septum deviation, and the majority of these symptoms recover after septal surgery.
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Tabique Nasal , Faringitis , Adulto , Humanos , Obstrucción Nasal/cirugía , Obstrucción Nasal/diagnóstico , Tabique Nasal/cirugía , Dolor , Faringitis/epidemiología , Faringitis/cirugía , Faringe/cirugía , Estudios Prospectivos , Rinoplastia/métodos , Resultado del TratamientoRESUMEN
BACKGROUND: Intranasal phototherapy offers an alternative treatment method for patients with allergic rhinitis who cannot benefit from intranasal corticosteroids and oral antihistamines. Different wavelengths have been tried with promising results. OBJECTIVE: In this present study, we aimed to investigate the effects of visible light-infrared light phototherapy on clinical improvements together with its cytologic effects in patients with allergic rhinitis. METHODS: Patients with confirmed allergic rhinitis were given a 4-week course of intranasal phototherapy treatment. Weekly symptom questionnaires were applied to monitor clinical effects. Nasal lavage specimens were obtained before the start and at the completion of the 4-week therapy. Fluorescence-activated cell sorting analyses of CD16+, CD24+, and CD 45+ cells were performed. Statistical analyses are performed of weekly changes in symptoms and cell counts. RESULTS: CD45+CD16highCD24+ neutrophil count in nasal lavages decreased significantly whereas CD45+CD16dim/-CD24+ eosinophil counts significantly increased and CD45+ granulocyte counts remained unchanged. Symptom scores including nasal itching, nasal discharge, nasal obstruction, sneezing, eye itching, throat itching, and ear itching all statistically decreased compared to baseline at the end of 4 weeks. CONCLUSION: Four-week course of intranasal phototherapy with visible and infrared light leads to clinical improvement in allergic rhinitis patients.
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Rinitis Alérgica , Humanos , Rinitis Alérgica/terapia , Administración Intranasal , Fototerapia/métodos , Antagonistas de los Receptores Histamínicos , PruritoRESUMEN
Background: Problems in patients who could not get adequate surgical margins (SM) and good cosmetic results with breast-conserving surgery (BCS) have been overcome with the introduction of oncoplastic surgery (OPS) methods. The purpose of this study was the documentation of level II techniques and the presentation of long-term survival results. Methods: The data on patients who had been prospectively registered in the database between 2007 and 2017 and who had been treated with level II OPS due to invasive breast cancer were examined. Results: A total of 1,074 patients were included in the study. The most commonly applied level II oncoplastic techniques were performed in the upper outer quadrantectomy with racquet incision in 334 (31%) patients, inferior pedicle flaps in 294 (27.3%), and vertical mammoplasty in 140 (13%). Reexcision was performed in 96 patients (8.9%). Total breast conservation rate was 96%. Five-year disease-free survival (DFS) was 88%, local recurrence-free survival (LRFS) 93.6%, and overall survival (OS) 96%. Ten-year DFS was 72%, LRFS 85.4%, and OS 90.2%. Conclusion: Level II OPS techniques have low reoperation and complication rates and a high rate of breast protection. The success of these techniques has been demonstrated in terms of long-term local control. Awareness of the fact that many patients who undergo OPS will not lose their breasts should be created, and regular training programs for OPS techniques should be conducted especially in developing countries. By revealing these results, it is hoped that the OPS and breast conservation rates will increase.
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BACKGROUND: Blood pressure fluctuations appear more significant in patients with poorly controlled hypertension and are known to be associated with adverse perioperative morbidity. In the present study, we aimed to determine the effects of antihypertensive drug treatment strategies on preanesthetic operating room blood pressure measurements. METHODS: A total of 717 patients participated in our study; 383 patients who were normotensive based on baseline measurements and not under antihypertensive therapy were excluded from the analysis. The remaining 334 patients were divided into six groups according to the antihypertensive drug treatment. These six groups were examined in terms of preoperative baseline and pre-anesthesia blood pressure measurements. RESULTS: As a result of the study, it was observed that 24% of patients had high blood pressure precluding surgery, and patients using renin-angiotensin-aldosterone system inhibitors (RAASI) had higher pre-anesthesia systolic blood pressure than patients using other antihypertensive drugs. Patients who received beta-blockers were also observed to have the lowest pre-anesthesia systolic blood pressure, diastolic blood pressure, and mean blood pressure, compared to others. CONCLUSIONS: Recently, whether RAASI should be continued preoperatively remains controversial. Our study shows that RAASI cannot provide optimal pre-anesthesia blood pressure and lead to an increase in the number of postponed surgeries, probably due to withdrawal of medication before the operation. Therefore, the preoperative discontinuation of RAASI should be reevaluated in future studies.
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OBJECTIVES: Endoscopic balloon dilatation (EBD) offers a safe and non-invasive surgical option for the treatment of subglottic stenosis. Patient selection is important to achieve good results and to detect which patients are more prone to the development of complications. The aim of this study was to determine predictors of postoperative problems and early complications in primary EBD surgeries. METHODS: A retrospective analysis was made of patients with acquired subglottic stenosis who were operated on with the EBD technique between January 2010 and December 2019 in the Otolaryngology-Head and Neck Surgery Department of Baskent University Hospital. Demographic data including the age and sex of the patients were collected together with etiology, presence of chromosomal or craniofacial anomaly (C/CA), duration of prolonged intubation (DPI), and extubation dilatation timeframe (EDT). Intra and postoperative follow-up data were recorded of the need for intubation or tracheotomy, development of desaturation, and grade and type of stenosis. RESULTS: The male to female ratio was 2:1. The patients comprised 42 males and 22 females with a mean age of 296.52 ± 551.93 days. The cause of prolonged intubation was surgery for congenital heart disease in 50 (78.1%) patients and prematurity in 14 (21.9%). The type of lesion was acute granulation in 44 (72.1%) and chronic granulation in 17 (27.9%) patients. C/CA was determined in 13 patients, the mean grade of stenosis was 76.33 ± 15.21%, mean DPI was 25.25 ± 35.49 days, and mean EDT was calculated as 78.23 ± 373.82 days. Desaturation following endoscopic balloon dilatation developed in 26 (40.6%), orotracheal intubation was required in 10 (15.6%), tracheotomy in 10 (15.6%), and cardiopulmonary arrest occurred in 4 (6.25%). Prematurity, a longer duration of preoperative intubation, longer time from extubation to dilatation, older age, and higher grade of stenosis were determined as factors associated with postoperative early respiratory complications. CONCLUSION: EBD indication should be carefully considered in children with acquired subglottic stenosis. To achieve better results and minimise complications, EBD should be performed without delay.
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Laringoestenosis , Niño , Constricción Patológica/etiología , Dilatación/métodos , Femenino , Humanos , Laringoestenosis/diagnóstico , Laringoestenosis/etiología , Laringoestenosis/cirugía , Masculino , Complicaciones Posoperatorias/epidemiología , Complicaciones Posoperatorias/etiología , Estudios Retrospectivos , Resultado del TratamientoRESUMEN
Pharyngeal aberrant internal carotid artery (PAICA) has been reported to be a cause of oropharyngeal dysphagia (OD) in case reports. However, as there have been no clinical studies, the relationship between PAICA and OD is not clear. The aim of this study was to investigate the perception of OD in elderly PAICA patients using the Eating Assessment Tool-10 (EAT-10). A study group (Group 1) was formed of patients diagnosed with PAICA from the visualization of a pulsatile mass in the pharynx in flexible fiberoptic endoscopic examination and carotid magnetic resonance angiography tests, and a control group (Group 2) was formed of age-matched healthy volunteers. The study group was subdivided as patients with unilateral PAICA (Group 1a) and patients with bilateral PAICA (Group 1b). The Turkish version of the EAT-10 was applied to all the participants. Total EAT-10 points of ≥ 3 were accepted as abnormal. Normal (< 3) and abnormal (≥ 3) total EAT-10 points were determined in 88.9% (24/27) and 11.1% (3/27), respectively, of the control group, in 55.2% (16/29) and 44.8% (13/29) of Group 1, in 70.6% (12/17) and 29.4% (5/17) of Group 1a, and in 33.3% (4/12) and 66.7% (8/12) of Group 1b. A statistically significant difference was determined between the control group and Group 1 and Group 1b in respect of abnormal (≥ 3) EAT-10 total points (p = 0.007, p = 0.001, respectively). No statistically significant difference was determined between the control group and Group 1a (p = 0.227). Problems (EAT point ≥ 1) in item 4 (swallowing solids takes extra effort) were experienced by 13 (44.8%) patients in Group 1, 9 (75%) patients in Group 1b, and 5 (18.5%) subjects in the control group (p < 0.05). These results demonstrated that unilateral PAICA does not significantly affect swallowing, whereas bilateral PAICA created a significant negative effect. These patients experience more problems when swallowing solid food.
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Trastornos de Deglución , Anciano , Arteria Carótida Interna/diagnóstico por imagen , Deglución , Trastornos de Deglución/diagnóstico por imagen , Trastornos de Deglución/etiología , Endoscopía , Humanos , Faringe/diagnóstico por imagenRESUMEN
BACKGROUND: The effects and analgesic adequacy of intrathecal morphine (ITM) administration have been studied less frequently than other regional analgesia techniques in pediatric surgical procedures. OBJECTIVE: To evaluate the efficacy and adverse event rate of 5⯵g/kg ITM administration for postoperative analgesia according to age group. METHODS: We retrospectively evaluated the medical records of patients who underwent major pediatric surgery and were administered ITM for postoperative analgesia. Patients were divided into three age groups: ≤â¯5 years (group I), 5.1-13 years (group II) and >â¯13 years (group III). All patients received ITM 5⯵g/kg (max 300⯵g) through the L4-5 or L5-S1 interspace. Postoperative pain (modified pediatric objective pain score >â¯4), need for rescue analgesics, sleep interruption due to pain, sedation (Ramsay sedation scale score >â¯3), opioid-related postoperative adverse events (at 0, 4, 8, 12, and 24â¯h after intervention), hemodynamic data and nurse satisfaction with the analgesic method were compared between groups. RESULTS: The analysis included 100 children (47 girls, 9⯱ 5.4 years). Groups were similar regarding postoperative rescue analgesia consumption and sleep interruption (pâ¯= 0.238, pâ¯= 0.958), 96% of the children did not require rescue analgesia, and sleep interruption was not observed in 97%. Postoperative adverse events were pruritus in 14 and nausea/vomiting in 9 patients (pâ¯= 0.052). Overall, nurses were satisfied or very satisfied in 99% of the cases. CONCLUSION: Administration of 5⯵g/kg ITM can be used for postoperative analgesia in pediatric surgery in all age groups, with no severe adverse events and high nurse satisfaction with analgesic management.
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Analgesia , Morfina , Femenino , Humanos , Niño , Preescolar , Estudios Retrospectivos , Inyecciones Espinales , Analgésicos/uso terapéutico , Dolor Postoperatorio/inducido químicamente , Analgesia/métodosRESUMEN
INTRODUCTION: Hepatitis C virus infection is a major cause of cirrhosis and liver cancer worldwide. The knowledge of physicians about what should they do in case of any anti-HCV positivity in screening tests is of great importance. In this study the awareness and knowledge of physicians is evaluated by analyzing the rate of the referrals of anti-HCV positive patients to HCV RNA test and their treatment by different clinics. METHODOLOGY: The patients tested for anti-HCV in internal medicine, surgery, gastroenterology and infectious disease clinics between 1 January and 31 December 2017 were evaluated retrospectively in a tertiary care hospital. RESULTS: Anti-HCV testing was performed in 32,803 patients. Anti-HCV positivity was detected in 95 (0.28%) patients aged 88 years of age or younger (mean 60.89 ± 16.96 years), 57.89% of them were female. HCV RNA was tested in 50 (%52,63) of anti-HCV positive patients and it was found positive in 18 (36%) patients. In anti-HCV positive patients HCV RNA testing was requested most by infectious disease (100%) and gastroenterology (70.58%) clinics and least by surgery and other clinics (21% and 25% respectively). These differences were found to be statistically significant ( =33.65, p < 001). CONCLUSIONS: Our study highlights the significant deficiencies existed in the referring patients with anti-HCV positivity for further examination and treatment by the attending physicians especially in surgical clinics. Performing HCV screening in the different steps of medical care and using electronic reminder systems directing physicians at appropriate diagnostic and treatment protocols can maximize the likelihood of the detection and treatment of HCV- infected patients.
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Conocimientos, Actitudes y Práctica en Salud , Hepatitis C/epidemiología , Hepatitis C/prevención & control , Tamizaje Masivo , Derivación y Consulta/estadística & datos numéricos , Centros de Atención Terciaria/estadística & datos numéricos , Adulto , Anciano , Anciano de 80 o más Años , Antivirales/uso terapéutico , Concienciación , Femenino , Hepatitis C/diagnóstico , Hepatitis C/tratamiento farmacológico , Anticuerpos contra la Hepatitis C/sangre , Humanos , Masculino , Persona de Mediana Edad , Pautas de la Práctica en Medicina/estadística & datos numéricos , Estudios Retrospectivos , Turquía/epidemiología , Adulto JovenRESUMEN
BACKGROUND: Positional nystagmus elicited by the Dix-Hallpike maneuver often reverses its direction as the patient is re-seated from the provoking head hanging position. The incidence of reverse nystagmus and its association with prognosis in posterior canal benign paroxysmal positional vertigo (pcBPPV) is not clear. OBJECTIVE: To determine the incidence of upright positioning-related reverse nystagmus and its association with the success of canalith repositioning (Epley) maneuver (CRM) treatment in pcBPPV. METHODS: The records of patients that had been tested with video-nystagmography in a tertiary care center, between October 2016 and March 2019, were reviewed. Data were obtained from detailed analysis of video recordings of 321 patients with typical pcBPPV. RESULTS: Reverse nystagmus was determined in 85% of the patients with pcBPPV. The number of CRMs required for treatment was lower in patients with reverse nystagmus (1.32±0.68) compared to patients without reverse nystagmus (1.81±0.98) (pâ<â0.001). There was not a statistically significant relationship between reverse nystagmus and recurrence (pâ=â0.623). CONCLUSIONS: The absence of reverse nystagmus on upright positioning during the Dix-Hallpike test predicts poor success for the CRM, as repetitive repositioning maneuvers might be required to achieve successful treatment in pcBPPV.
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Vértigo Posicional Paroxístico Benigno/diagnóstico , Vértigo Posicional Paroxístico Benigno/fisiopatología , Nistagmo Fisiológico/fisiología , Posicionamiento del Paciente/métodos , Canales Semicirculares/fisiopatología , Grabación en Video/métodos , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Nistagmo Patológico/diagnóstico , Nistagmo Patológico/fisiopatología , Pronóstico , Estudios Retrospectivos , Adulto JovenRESUMEN
BACKGROUND: The aim of this study was to analyze the effect of device-dependent factors on epistaxis episodes comparing patients supported with a continuous-flow left ventricular assist device (CF-LVAD) to patients under the same antithrombotic therapy. METHODS: Patients who underwent CF-LVAD between 2012 and 2018 were reviewed retrospectively from the institutionally adopted electronic database. Patients who underwent mitral valve replacement (MVR) surgery receiving the same anticoagulant and antiaggregant therapy were included as a control group. Demographics, epistaxis episodes, and nonepistaxis bleeding between the two groups were compared. RESULTS: A total of 179 patients met the inclusion criteria (61 patients CF-LVAD group, 118 patients MVR group). The median (range) follow-up periods for the study (CF-LVAD) and control (MVR) groups were 370 (2819) and 545.70 (2356) days, respectively. There was a significant difference for frequency of bleeding episodes per month between CF-LVAD and MVR groups (p = 0.003 < 0.05). The most common site of bleeding was the anterior septum in both groups (90.9% for the CF-MVR group and 100% for the MVR group). While 14 patients (23%) had nonepistaxis bleeding in the CF-LVAD group, only two patients (1.7%) had nonepistaxis bleeding in the MVR group. There were significant differences in nonepistaxis bleeding rates between the CF-LVAD and MVR groups (χ2=19.79, p < 0.001). CONCLUSION: Both epistaxis and nonepistaxis bleeding rates were higher in the CF-LVAD group than in the MVR group. This suggests that the use of CF-LVAD support could directly increase the risk of hemorrhagic complications. LEVEL OF EVIDENCE: 2A (Etiology/Harm).
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Insuficiencia Cardíaca , Corazón Auxiliar , Anticoagulantes/efectos adversos , Epistaxis/epidemiología , Epistaxis/etiología , Corazón Auxiliar/efectos adversos , Humanos , Estudios RetrospectivosRESUMEN
BACKGROUND: Rhinoplasty is one of the most unforgiving operations in facial plastic surgery. The correction of nasal deviation in an asymmetrical face can be challenging because known facial landmarks may mislead the surgeon. Eyebrows trimmed asymmetrically in an effort to create a more symmetrical facial appearance may be overlooked by surgeons. OBJECTIVE: To define the relationship between the eyebrow position and external nasal deviation in patients with a crooked nose. DESIGN, SETTING, AND PARTICIPANTS: Analysis was made of the preoperative and 6-month postoperative life-size photographs of female rhinoplasty patients who had been referred to the senior author's clinic between May 2014 and June 2019. The anthropometric landmarks on the life-size photographs were identifed. The most medial points of the eyebrows and most deviated part of the nose were marked and the distance from the mid-canthal point was measured. MAIN OUTCOMES AND MEASURE: The direction and amount of eyebrow shift were compared with the direction and amount of nasal deviation. RESULTS: Of the total 94 female rhinoplasty patients with at least one level external nasal deviation, 67 (71.2%) had ipsilateral eyebrow shift with external nasal deviation. The preoperative external nasal deviation amount was 1.81 ± 1.21 mm and preoperative eyebrow shift was 1.18 ± 1.06 mm (rS = 0.429, p < 0.001). The postoperative nasal deviation was 0.79 ± 0.92 mm, and the eyebrow shift was 0.54 ± 0.62 mm (rS = 0.570, p < 0.001). CONCLUSION AND RELEVANCE: Patients may tend to trim their eyebrows towards the side of the external nasal deviation. After centralization of the crooked nose with rhinoplasty, asymmetric eyebrow shaping tendencies of the patients were also seen to be improved. LEVEL OF EVIDENCE IV: This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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Deformidades Adquiridas Nasales , Rinoplastia , Estética , Cejas , Femenino , Humanos , Tabique Nasal/cirugía , Nariz/cirugía , Deformidades Adquiridas Nasales/cirugía , Resultado del TratamientoRESUMEN
OBJECTIVE: In this study, we aimed to translate the Glasgow-Edinburgh Throat Scale (GETS) into Turkish and test its reliability and validity. METHODS: A total of 69 patients with globus sensation and no signs of otolaryngologic or gastroenterological disease in etiology were included in the study. The patients were asked to complete the translated Turkish version (GETS-T) of GETS and the Hospital Anxiety and Depression Scale (HADS). RESULTS: The Cronbach's alpha coefficient of the patients in the study group was calculated based on the 12 questions in the GETS-T scale and found as 0.868. The correlation between the GETS-T total score and the total HADS score in the study group was found to be very low and statistically insignificant. As a result of factor analysis, it was found that the first 10 problems in GETS-T were divided into two sub-groups, unlike GETS. CONCLUSION: Translation of GETS into Turkish (GETS-T) showed high reliability and validity, suggesting that translation and cross-cultural adaptation was appropriate. The GETS-T can be used in studies about globus pharyngeus in future.
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OBJECTIVE: The present study aims to describe a widely held misconception in the literature concerning preoperative hypertension diagnosis. The blood pressure elevation occurring in the operative room is seen commonly even in subjects considered hitherto fully normotensive. As these patients have a condition which - similar to White Coat Hypertension (WCH) - indicates the presence of hypertension, and thus necessitates more frequent intraoperative checks. METHODS: We have named a condition 'Diagnosed in Operating Room (DIOR) with Hypertension', following the preoperative stage at which it is detected. RESULT: Our observational study evaluated 718 elective noncardiac surgery adult patients, finding 28% of them (n = 204) to be 'DIOR-tensive' and thus at risk for suboptimal intraoperative care. CONCLUSION: In addition to recommending a modification to the domain's best practices, we provide a preliminary description of DIOR hypertension patient identifying characteristics (older, higher body weight and BMI, and higher rates of chronic obstructive pulmonary disease, hypothyroidism and obesity), so that DIOR hypertension patients may be more readily identified, and that future research may build on the findings, and that the operating team may remain generally aware that this problem can occur and be dealt with regardless of the patient's medical history.
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Hipertensión , Presión Sanguínea , Monitoreo Ambulatorio de la Presión Arterial , Humanos , Quirófanos , Factores de RiesgoRESUMEN
PURPOSE: This study compares the prevalence and the length of mental loops, which were measured with panoramic radiographs and spiral computerized tomographs (SCT). MATERIALS AND METHODS: Seventy-three panoramic radiographs and 73 SCTs were taken for preoperative planning of implant placement in the interforaminal region of the anterior mandible. The bone quality of both mental regions in each patient was determined by 1 experienced calibrated clinician, and the cross-sectional images of the SCTs were evaluted for bone quality according to the Lekholm and Zarb classification. Panoramic radiographs and cross-sectional SCT images were examined carefully by the same calibrated clinician to determine the presence and to measure the length of the mental loop in each patient. The relationship between these radiographs was also examined and correlated with bone quality. Paired samples t test and Pearson's correlations were used to examine the agreement between 2 radiographic methods at each bone quality. A 5% level of significance was chosen. RESULTS: The prevalence of the mental loop in panoramic radiographs and spiral CT images was 28% and 34%, respectively. The mental loop was identified more frequently in spiral CT images regardless of bone quality. The demonstration of the mental loop between radiographic methods was more pronounced in poor bone quality. The mean length of the mental loop in panoramic radiographs was 3.71 +/- 1.35 mm and 3.00 +/- 1.41 mm in SCT. Measurements for panoramic radiographs were higher than those for spiral CT images. There was a correlation of r = 0.66 (P = .01) between the 2 radiographic methods, indicating agreement. CONCLUSIONS: SCT demonstrated a higher prevalence of mental loops than panoramic radiographs. SCT can be more useful to visualize and measure the mental loop in low bone qualities. Panoramic radiographs significantly overestimate (P = .02 in type 3, P = .01 in type 4) mental loop length, which were measured in spiral CT images in poor bone quality, but there is a close correspondence between these 2 radiographs in higher quality bone.