Archive

15 September 2013, Volume 6 Issue 9 Previous Issue    Next Issue

---

For Selected:

Download Citations EndNote Ris BibTeX

Toggle Thumbnails

Select

Application of minimally invasive surgical technology in zygomatic fractures treatment. LI Zhi 2013, 5(9): 513-516.  Abstract ( )   PDF (960KB) ( )   Abstract： With the development of minimally invasive surgical techniques， the oral and maxillofacial surgeons attach more importance to the treatment methods with less operation trauma. At present， minimally invasive surgery in zygomatic fractures treatment focuses on two respects：one is the more wide application of small incision or percutaneous approach，and the other is the rising application of new techniques represented by image-supported， endoscopic-assisted and computer-aided techniques. The latter can reduce the operation trauma. This paper introduces the application of minimally invasive surgical techniques，including small incision or percutaneous approach and image-supported， endoscopic-assisted and computer-aided techniques in the treatment of zygomatic fractures.

Select

Application of the endoscope in condylar fracture management. BAI Xiao-feng， LU Li 2013, 5(9): 516-519.  Abstract ( )   PDF (949KB) ( )   Abstract：Endoscopic-assisted technique could make surgery more minimally invasive， and has been applied in the field of oral and maxillofacial surgery in recent years. In condylar fractures， the endoscope may be used to restore preinjury condylar height and angulation， avoiding the feared risks of facial nerve injury and visible scarring. When used selectively， endoscope-assisted open reduction and internal fixation would be one of the best choices for the management of condylar fracture.

Select

The epidemic study on the relationship between periodontitis and chronic obstructive pulmonary disease. TAN Li-si， ZHAO Xue，WANG Hong-yan，PAN Ya-ping 2013, 5(9): 520-524.  Abstract ( )   PDF (920KB) ( )   Abstract： Objective To explore the relationship between periodontitis and chronic obstructive pulmonary disease by analyzing the relationship between FEV1% and periodontal index. Methods Totally 160 cases of stable COPD and 106 cases of acute exacerbation of COPD were collected. Check and record simplified oral hygiene index，sulcus bleeding index，probing depth and clinical attachment loss of all six index teeth， use pulmonary function to test and record the FEV1%， and do oral survey for all subjects. Results （1）The smoking rate of AE-COPD group was 47.2%， which was higher than that of the stable COPD group （P < 0.01）； （2）SBI，PD and CAL of AE-COPD group were significantly higher than that of stable COPD group （P < 0.01）；（3）OHI-S，SBI，PD and CAL of AE-COPD group showed a strong correlation with FEV1% （r = -0.309，P < 0.01；r = -0.333，P < 0.01；r = -0.395，P < 0.01；r = -0.702，P < 0.01）；CAL of stable COPD group was correlated with FEV1% （r = -0.657，P < 0.01）. Conclusion （1）Smoking is a very important risk factor for periodontitis and COPD.（2）The degree of periodontal inflammation in AE-COPD patients aggravates with pulmonary function abating， which suggests there is a correlation between periodontitis and COPD.

Select

Research diagnostic criteria for temporomandibular disorders for evaluating axis diagnosis of TMD patients in China. CHEN Wei-sheng，ZHENG You-hua，LIN Xue-feng 2013, 5(9): 525-528.  Abstract ( )   PDF (892KB) ( )   Abstract： Objective To assess the axis Ⅱ diagnosis of TMD patients in China who seek treatment for TMD using Research Diagnostic Criteria for TMD （RDC/TMD）. Methods Clinical data of the TMD patients were collected using the RDC/TMD. Results A total of 142 TMD patients were surveyed and examined clinically. There were 133 valid scales involving 9 with missing data．There were 38 men and 95 women with the ratio of 1：2.5. Patients suffered from TMD were commonly seen at the age between 18 and 44， and 67.7% of TMD patients received college education； the income of 84.2% TMD patients were below 5000yuan. The axis diagnosis indicated that there were psychological distress and psychosocial dysfunction in TMD patients with no statistical significance among different demography situation （P > 0.05）. The TMD patients’ depressive symptoms were clearly associated with widespread non-speci?c physical symptoms even when pain items were excluded from the calculation to reduce the effects of pain co-morbidity （P < 0.05）.Conclusion There are psychological distress and psychosocial dysfunction in TMD patients. The TMD patients’ depressive symptoms are clearly associated with widespread non-speci?c physical symptoms even when pain items are excluded from the calculation to reduce the effects of pain co-morbidity.

Select

Short-term clinical curative effect analysis on application of flapless technique in dental implantation. HE Jing*，SHANG Ya-wei，CHEN Chu-wen，DENG Chun-fu，SHANG De-hao，ZHANG Chong，WANG Dan-ning，ZHAO Bao-hong 2013, 5(9): 529-533.  Abstract ( )   PDF (1032KB) ( )   Abstract：Objective To observe and evaluate the clinical effects of minimally invasive flapless technique in dental implant surgery. Methods Totally 25 patients （31 implants） who received flapless surgery during the period between January 2010 and December 2011 at the Implant Center of Stomatology Hospital of China Medical University were selected as the flapless group and another 25 patients （40 implants） who received traditional surgery during the corresponding period were selected as the control group. Related clinical data were recorded and analyzed on the day of surgery and follow-up，including length of surgery，duration of discomfort after operation，loss of implant，peri-implantitis and level of bone resorption，gingival papilla height，etc. Results One implant was lost in the flapless group，while no implant failed in the control group. Less bone resorption was observed in the flapless group（P < 0.05），while gingival papilla index showed no significant difference between the two groups（P > 0.05）. The length of surgery and duration of discomfort after operation in the flapless group were significantly less than the control group（P < 0.05）. Conclusion On the basis of strict control of operation indication，flapless surgery will save operation time to a large extent，relieve patients postoperative reaction and obtain more satisfactory clinical results.

Select

Application of digital rapid process implant template in implant surgery of maxillary anterior teeth area. SHI Guang-hui， REN Chun-fu，YANG Zhong-rui， ZHU Yong-cui， ZHAI Lei 2013, 5(9): 534-536.  Abstract ( )   PDF (879KB) ( )   Abstract： Objective To evaluate the effect of the application of digital rapid process implant template in implant surgery of maxillary anterior teeth area. Methods Totally six patients with maxillary anterior teeth missing who need implant surgery were collected and the implant template was made by digital rapid process technology and was used in implant surgery. Then the deviations of the implant body were measured. Results The surgery process was satisfactory. Slight postoperative reaction was observed，and 3-6 months after implant crown repair was successfully completed. In CT image the deviation of the neck and apical of the implant body was （0.71±0.17）mm and （0.85±0.19）mm， respectively. Conclusion The digital rapid process implant template is a very effective method in implant surgery of maxillary anterior teeth area.

Select

Effects of glucocorticoid on osteoprotegerin expression in periodontal ligament cell. CHEN Jin*， LI Qiu-lan， LUO He-ping， LI Qin. *Department of Stomatology， Jiangxi Pingxiang People’s Hospital， Pingxiang 337000， China 2013, 5(9): 537-539.  Abstract ( )   PDF (1247KB) ( )   Abstract：Objective To investigate the effect of glucocorticoids on periodontal ligament cell （PDLC） expressing osteoprotegerin. Methods Healthy premolars extracted for orthodontic reasons from a 12- year- old boy were obtained， and periodontal tissues were collected and cultured to obtain PDLCs. PDLCs were obtained by means of limited dilutions and were characterized as positive cloned cells. Dexamethasone （DEX） was added into culture media and their effects on PDLC proliferation and OPG secretion were observed. The OPG concentrations in cell culture supernatants were detected by sandwich ELISA. Living cell numbers were demonstrated by MTT result. Results DEX above 40 ng/mL decreased the opg and opg/mtt values （P＜0.001） but had no effect on mtt values （P＞0.05）. Conclusion Glucocorticoids might increase periodontal bone resorption by inhibition of OPG production in periodontal ligament cells.

Select

The research on the pathogeny of black tooth stain and the association between black tooth stain and primary dentition caries in preschool children. SUN Jia-yi， ZHAO Xia， TENG QI， LUAN Xiao-ling， LI Hong 2013, 5(9): 540-543.  Abstract ( )   PDF (890KB) ( )   Abstract：Objective To know the pathogeny of the black stain on primary teeth in preschool children and to assess a possible association between black stain and caries. Methods This cross-sectional study was carried out in three public kindergartens in Qingdao Shinan-Zone，China．The study consisted of 434 children aged 3 to 6. Caries statuses and the black stain on teeth were assessed by two calibrated dentists using WHO criteria. The questionnaires were done by parents， which included the time of children's brushing，the frequency of brushing and eating seafood，the use of antibiotics and so on. Data were analyzed using SPSS15.0 statistics software. Results The prevalence of black stain was 14.75% among these 434 children. There was no significant difference between male and female children. The caries prevalence of children with black stain was 43.5%， significantly lower than the children without black stain（62.7%，P < 0.001）. There was an association between black stain and the frequency of having food containing pigment or the seafood and the use of antibiotics. Conclusions The cause of black stain on primary teeth in Chinese preschool children is complex. There is a negative relation between black stain and caries．

Select

The effect of occlusal reduction on the postoperative pain level after one-visit endodontic treatment for acute pulpitis. YOU Yue-hua，LI Mei-zai 2013, 5(9): 544-546.  Abstract ( )   PDF (888KB) ( )   Abstract：Objective To discuss the effect of occlusal reduction on the postoperative pain level after one-visit endodontic treatment for acute pulpitis. Methods Totally 44 cases of acute pulpitis of mandibular molar were selected and divided into the experiment and control groups. The experiment group included 22 cases receiving total occlusal reduction in both centric and lateral occlusion after the root canal therapy. The control group included 22 cases without reduced occlusion. The rate of pain response and VAS （Visual Analogue Scale/Score）， which was evaluated 7 days， 1 time per day，were recorded after operation. A comparison of the pain response and VAS results was done between the two groups. Results There was no statistically significance between the groups regarding the rate of pain response after operation （the experiment group 36.36%， the control group 40.91%， P > 0. 05）. The VAS of the experiment group was slightly lower than the control group， the difference having statistical significance （P < 0.05）. Conclusion Occlusal reduction has no effect on the rate of pain response， whereas it might diminish the pain degree following acute pulpitis in one-visit root canal therapy.

Select

Evaluation of clinical efficacy of mini-screw implant as anchorage for extruded molar intrusion. HONG Shuo 2013, 5(9): 547-549.  Abstract ( )   PDF (1042KB) ( )   Abstract：Objective To evaluate the efficiency of mini-screw implants as anchorage for extruded molar intrusion. Methods Thirteen patients with over-erupted maxillary molars were selected，including 9 patients with extruded maxillary first molars because mandibular first molars missed，and 4 patients with extruded maxillary second molars because of molars scissors bite on one-side posterior teeth. All the extruded first maxillary molars were intruded in gingival direction with mini-screw implants anchorage. Lateral cephalograms and orthopantomograph were taken at the beginning and the end of the treatment. The movement of molars in vertical dimension was analyzed. Results The extruded first maxillary molars were intruded （3.00±0.65）mm averagedly in 6.5 months. Conclusion Mini-srcew implant as anchorage is an effective method to intrude the extruded maxillary molars.

Select

Influence of ultrasonic irrigation on the endodontic interappointment pain. JING Tie-nan*，NIU Lei 2013, 5(9): 550-552.  Abstract ( )   PDF (875KB) ( )   Abstract： Objective To assess the influence of ultrasonic irrigation on the endodontic interappointment pain. Methods Totally sixty-four teeth of fifty patients with the diagnosis of peri-apical periodontitis were divided into two groups （ultrasonic irrigation group and syringe irrigation group）. The incidence of endodontic interappointment pain was evaluated and compared clinically. Results The incidence of ultrasonic irrigation group was lower than that of yringe irrigation group （P < 0.05）.Conclusion Ultrasonic irrigation of the root canal can decrease the incidence of pain， thus it is worth the promotion and application in clinic.

Select

Application of computer-aided surgery in the treatment of diseases of temporomandibular joint. LU Chuan，HE Dong-mei，YANG Chi 2013, 5(9): 556-559.  Abstract ( )   PDF (921KB) ( )   Abstract：Computer-aided surgery（CAS）has been widely used in maxillofacial surgery， for examples， in posttraumatic reconstruction， orthognathic surgery， resection of head-and-neck tumors and reconstruction. In recent years， CAS has become more and more popular in the treatment of diseases of temporomandibular joint，like resection of bone fusion in temporomandibular joint ankylosis， fixation of condyle fractures， resection of condyle benign or malignant tumors and so on. This article is aimed to present a summary of the applications of the CAS in the treatment of diseases of temporomandibular joint.

Select

The mechanism of calcium hydroxide in root canal disinfection. GUO Jia-jie，QIU Li-hong 2013, 5(9): 566-571.  Abstract ( )   PDF (938KB) ( )   Abstract： Calcium hydroxide gets more and more used in the disinfection of root canal for its unique physical and chemical properties. Many studies show that calcium hydroxide has good diffusivity and can produce the disinfection effect by destroying bacteria and degrading lipopolysaccharide （LPS）. This article will make a review on the mechanism of calcium hydroxide in disinfection of root canal.

Select

Research progress of SIRT1 in suppressing inflammatory response. QU Liu，QIU Li-hong 2013, 5(9): 566-570.  Abstract ( )   PDF (927KB) ( )   Abstract：SIRT1，a histone deacetylase which belongs to the sirtuin family，is expressed in most human cells. SIRT1 plays a vital role in glucolipid metabolism and aging. There are emerging results indicating that SIRT1 can inhibit the inflammatory responses via suppressing several signaling pathways. In this review we outline recent research advances on the biological characteristics of SIRT1，its anti-inflammatory effects and its inhibition to downstream signaling pathway.

Select

The relationship between oral malodor and periodontal disease. LV Xin，LIN Li 2013, 5(9): 571-574.  Abstract ( )   PDF (919KB) ( )   Abstract：Oral malodor have been closely correlated with periodontal disease. This paper will review from several aspects such as the etiology， diction and treatment of oral malodor and the function of the major components of oral malodor volatile sulfur compounds on periodontal tissue.

Select

Keywords：supernumerary teeth； mesiodens； the fourth molar 2013, 5(9): 575-576.  Abstract ( )   PDF (879KB) ( )