Praktische Kieferorthopadie最新文献

{"title":"[Orthodontic space-closure after extraction of the upper lateral incisors in adult patients with Class II Division 2 malocclusions].","authors":"U Moser,&nbsp;L Moser","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In three adult patients with Class II division 2 malocclusions the upper lateral incisors were extracted either because of their deformity or nonvitality. Orthodontic space-closure was performed in all three cases to prevent any prosthetic procedure. The sequence of therapeutic steps and difficulties during treatment are discussed.</p>","PeriodicalId":77592,"journal":{"name":"Praktische Kieferorthopadie","volume":"5 3","pages":"189-200"},"PeriodicalIF":0.0,"publicationDate":"1991-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12976633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Cephalometric analysis of Class III patients after surgery].","authors":"I Grunert,&nbsp;C Krenkel","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The University of Innsbruck, Department of Dentistry, analysed the cephalograms of 23 prognathic patients whose dysgnathia was corrected by an osteotomy of the mandible only. The obtained results were compared with an analysis of the respective models. Documentation was obtained prior to surgery, post-operatively and during follow-up examinations over a period of at least six years. Evaluation of the results focused on occlusion and the WITS-appraisal. Prior to surgery 21 patients presented with a macromandibulosis which in 50 percent of the cases was combined with a micro- or retromaxillosis. As a rule, there were also dento-alveolar compensations with retrusion of the lower front teeth and protrusion of the anterior maxillary teeth. Surgical results remained stable in 14 cases, three patients incurred a slight partial relapse while six patients had a significant relapse, though the original extend of the malocclusion with anterior crossbite reoccurred in two cases only. It was possible to prove the relationship between relapse and the existence of myofunctional disturbances. Consequently, safe long-term results may only be obtained by means of interdisciplinary planning and treatment.</p>","PeriodicalId":77592,"journal":{"name":"Praktische Kieferorthopadie","volume":"5 3","pages":"215-28"},"PeriodicalIF":0.0,"publicationDate":"1991-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12978902","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Protraction--it's use and abuse].","authors":"J H Hickham,&nbsp;R R Miethke","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>1. Protraction devices can be used to close excess spaces by moving posterior teeth forward, to protract maxillas, to rotate arch segments in cleft palate patients and to remove hyper anterior contacts in patients with TMJ derangements. 2. There are three types of protraction headgears: Chin support with cranial straps (Hickham), chin support with a forehead pad (Face mask) and zygoma support with a headband (Suborbital). They all have specific advantages and disadvantages. 3. The force magnitude from a protraction gear varies according to the desired effect from between app. 400 grams/side to move the maxillary anterior teeth forward and 800 grams/side to encourage maxillary sutural expansion. 4. The centers of rotation of the jaws and the dentition are located apically to the attachment of the protraction device. Therefore not only the intended mesially oriented force is produced but also the undesired side effect of both jaws moving around their centers of rotation. To avoid these negative effects the protraction elastics should always leave the arch in the canine area. 5. Basically Class III cases are due to either a short maxilla and/or a long mandible with variations in the vertical. App. 60% of all Class III cases have a short maxilla indicating the need for protraction. About 50% of the total Class III patient population would need surgery to finish with an ideal occlusion. However, many types of compromise treatments can be acceptable. 6. A good occlusion can only be accomplished in the presence of normal function. In Class III patients special attention should be given to possible nasal obstruction as well as to tongue posture and function. ENT cooperation and tongue spikes are often necessary to resolve these problems. 7. Class III elastics tend to rotate the maxilla and mandible counterclockwise. The resulting change in molar relationship is only due to the rotation of the occlusal plane which is unstable. Also because of the extrusional side effect there is an increase in vertical dimension which usually is undesirable. 8. Intraorally the protraction device can either be attached to a bonded acrylic expansion appliance or to a cemented Hyrax depending on the developmental stage of the dentition. To avoid traumatic occlusion conditions a modified splint should be used with the protraction gear in adults. 9. In all growing Class III patients overcorrection of overjet and overbite is very important. This way not only possible relapse is prevented but also the change of a posteriorly displaced mandible is avoided which could be a later cause for TMJ derangement. 10. When deciding whether the deformity is in the maxilla or in the mandible--the individualized Jacobson templates are very helpful.</p>","PeriodicalId":77592,"journal":{"name":"Praktische Kieferorthopadie","volume":"5 2","pages":"115-32"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12976627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Clinical experiences using modified Schwarz double plates].","authors":"A M Reuter,&nbsp;G Sterzik","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The efficiency of supported double plates according to A.M. Schwarz in the treatment of patients with distocclusion is well-known. When using these appliances we prefer the following procedure: First maxillary and mandibular dentition are treated separately with biomechanically active plates. Then the mandible is adjusted to the normal occlusion but not before the eruption of the first premolars. We attach great importance to the motivation of parents as well as patients for a 12-week intensive co-operation. During this period the patient is expected to wear the appliance 16 to 17 hours per day. It is not necessary for the patient to wear the double-plates at school. The modification of our double plates consists in a U-shaped \"Vorbissbügel\" (a guidance for protrusive occlusion) with an adequate frontal inclined plan at the mandibular plate.</p>","PeriodicalId":77592,"journal":{"name":"Praktische Kieferorthopadie","volume":"5 2","pages":"141-8"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12976629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Clinically relevant biomechanics. 2. Mechanics of non-symmetric front teeth-intrusion].","authors":"R S Meyer,&nbsp;H Wehrbein,&nbsp;B Schneider,&nbsp;P Diedrich","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Front teeth can be intruded by the segmented arches described by Burstone. The article analyses the vertical forces under the influence of symmetric intrusion arches and examines the static situation caused by non-symmetric activation of symmetric intrusion mechanics. It shows that in some cases even extrusive forces can occur in the anterior segment, whereas intrusive forces are intended to be applied.</p>","PeriodicalId":77592,"journal":{"name":"Praktische Kieferorthopadie","volume":"5 2","pages":"133-40"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12976628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Automation for the orthodontics model analysis using a digital caliper].","authors":"D Jagoda,&nbsp;B Neumayer","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>1. The discussed program structure is a common one and is transferable to other computer systems. 2. The structure is independent from computer language and thus is usable with various computer languages. 3. This proposal for automation is helpful in treatment planning but it cannot substitute the orthodontists diagnostic work. 4. Because of the modular structure the program can be used for daily practice as well as for extensive scientific works. 5. The program can be included totally or partly in other programs and used as an integral part of existing programs.</p>","PeriodicalId":77592,"journal":{"name":"Praktische Kieferorthopadie","volume":"5 2","pages":"153-8"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12976631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Cementing brackets with glass ionomer cements].","authors":"S Schanbel,&nbsp;B Kocjancic","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The results of this in-vitro investigation on cementing brackets with different glass ionomer cements show that Fuji I is the only cement which could be used as an alternative for bonding metal brackets to enamel. Although present clinical use seems to be quite satisfying, further in-vivo research will be necessary to prove and confirm these findings. All other investigated glass ionomer materials demonstrated a significant loss of shear bond strength after various temperature changes and therefore do not seem to be indicated for clinical use. At the moment research and development of the various glass ionomer cements are so intensified that it is almost impossible to give general statements or recommendations on different brands for cementing brackets to enamel.</p>","PeriodicalId":77592,"journal":{"name":"Praktische Kieferorthopadie","volume":"5 2","pages":"149-52"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12976630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Indication and application of the cervical traction headgear].","authors":"B Kahl","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Two types of cervical headgear were presented, the cervical traction with caudal tip and with cranial tip of the long outer bow. The results of an actual long-term follow-up study show long-term stability after distalization with both appliances. The indication and application of the cervical traction are described as a two-term movement. Type I, the cervical headgear with long outer bow tipped 10 to 15 degrees caudal to the inner bow allows to move the crown of the molar distally and to upright mesially tipped molars; the classic indication is the dentoalveolar class II division 1. Type II with long outer bow and tip of 10 to 15 degrees cranial is indicated to upright the roots distally in cases of dentoalveolar and/or skeletal class II with deep overbite. As a concluding remark the recommendation is made that the indications for extraction therapy are understood and that cervical headgears are not seen as a substitute for extractions.</p>","PeriodicalId":77592,"journal":{"name":"Praktische Kieferorthopadie","volume":"5 2","pages":"105-14"},"PeriodicalIF":0.0,"publicationDate":"1991-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12977458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Alignment of malpositioned canines].","authors":"L Wagner","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>This article presents a system for aligning impacted canines. The base of this system is the lingual arch, a rigid reaction unit of four teeth, molars and premolars. From this base unit an impacted canine can be extruded, moved distally, jumped over the occlusion and derotated by segment arches, coil springs and elastic ligatures. The efficiency of this appliance is due to the elimination of undesired reactive forces, the safe moving of teeth, the possibility of an exact force application and the simple manipulation; also the esthetic inconvenience is minimal. All this results in a better prognosis and an essentially shorter treatment time. This appliance can be used in the upper and the lower jaw. Schematic drawings and clinical examples demonstrate this method.</p>","PeriodicalId":77592,"journal":{"name":"Praktische Kieferorthopadie","volume":"5 1","pages":"29-36"},"PeriodicalIF":0.0,"publicationDate":"1991-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12977451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Can attachment gain be achieved by means of orthodontic measures?].","authors":"B Melsen,&nbsp;N Agerbaek","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The influence of intrusive movement was analyzed in an animal experiment. The results indicate that the periodontal status previously observed might in fact be related to a clinically significant amount of new attachment. Since the intrusion is carried out in case of horizontal bone loss, this treatment is specially focusing on the situation which has the most doubtful prognosis by means of the current new attachment procedures. A possible explanation of the attachment gain demonstrated may be that the stretching of the periodontal ligament fibres at the marginal level generates a sort of natural filter reducing the down growth of the epithelium. Another possible explanation may be that the orthodontic stimulation increased the turnover in the periodontal ligament and thereby improved the chances of the periodontal ligament to repopulate the previous infected root surface. There is, on the basis of the results presented reason to believe that a combination of a prevented colonarization from gingival tissue and a stimulation of the periodontal ligament cells showed open new perspective in the treatment of heavily involved periodontal patients.</p>","PeriodicalId":77592,"journal":{"name":"Praktische Kieferorthopadie","volume":"5 1","pages":"11-6"},"PeriodicalIF":0.0,"publicationDate":"1991-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"12977597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}