Tuesday, 21 May 2013

Various ways and means to counter resorbed maxilla - Behnam Aghabeigi

The particular zygomatic implant positioning method doesn't require any adjunctive care. Again, the ability to directly work with present dentures additionally, the insufficient need for bone grafting as well as prolonged hospitalisation helps make this particular therapy method much more satisfactory to the patient.

Positioning of dental implants while in the posterior maxilla is commonly jeopardised by the particular size along with extension associated with the particular sinus cavities along with insufficient quantities of bone tissue. Atrophic processes may be accelerated through extractible dentures too. Surgical treatments ended up subsequently made to elevate the floor of the sinus as well as fill the actual hereby established hole with bone or simply a alternative material, to be able to subsequently install dental implants. Autogenous bone, harvested from the iliac crest, continues to be the the best possible bone grafting treatment including maxillary sinus augmentation strategies. In view of the extreme maxillary atrophy, the conventional medical strategy would have been maxillary augmentation with or without a titanium mesh and particulate cancellous bone marrow graft from the iliac bone. Another choice happens to be a Le Fort osteotomy by having an interpositional iliac corticocancellous block graft.

Extraoral bone cropping needs enhanced hospitalisation, monetary costs, contributor site morbidity along with functional limits. Additionally, there may be up to 8.6% probability of issues soon after iliac crest bone graft harvesting. Perhaps substantial morbidity rates such as pain (14%) and also neurosensory deficits (26%) have been reported recently. Ultimately, unpredictable decline in size of the bone graft, as a result of resorption, may be a frequent finding.

The endorsement of this particular method is actually low by both individuals in addition to doctors with the following grounds:

1.The particular psychological nervous about being put through a somewhat major surgery

2.The particular need for hospitalisation along with morbidity connected with a far-away contributor site, especially the constrained mobility associated with the iliac bone graft

3.Inability make use of the prevailing denture during the graft recovery. This particular provision should minimise graft resorption by eliminating transmission of occlusal loads to the grafted site in the course of the recovery part

4.Improved expenditures on the process including the cost of hospital stay, use of in-patient working facilities an additional surgical team to your bone tissue harvest

5.Prolonged therapy time together with late implant placement four to six months after the grafting procedure.

Simultaneous placement of dental implants during bone grafting is prevented due to a decreased rate of success in comparison with overdue location.

An alternate treatment according to Aghabeigi Birmingham for this particular group of individuals may be the zygomaticus implant, created by Branemark. The implant may be a titanium endosteal implant starting in length from 30 mm to 52.5 mm. The surgical procedure is conducted according to general anaesthesia as described somewhere else. In brief, soon after bilateral elevation from the buccal mucoperiosteal tissue, elimination of the actual side to side sinus bony window posteriorly as well as reflection of the antral mucosal lining, two zygomatic implant tend to be put engaging the particular dense bone fragments of the body of zygomatic arch, rising intraorally inside upper premolar region just palatal to the alveolar crest. Every single implant can be introduced in to the second premolar location, traversing the particular maxillary sinus, and is particularly placed into the body of the zygomatic bone.

Synchronous keeping at least 4 dental implants in the canine and also the central incisor maxillary region, permits fabrication of fixed hybrid prosthesis. Additionally, keeping of two zygomatic implants and at least two commonplace dental implants with the pyriform buttresses enables construction of a bar to support a maxillary overdenture without making use of just about any bone grafting. In the event that more root form dental implants may be placed inside the pre-maxilla a fixed prosthesis may very well be created.

For more information about Behnam Aghabeigi visit here : http://benaghabeigi.com

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Thursday, 16 May 2013

Behnam Aghabeigi and team work on variations in Self assessment and Assessment

This particular explanation of a paper aims to look at the difference of examination and self assessment ratings within oral and also maxillofacial surgery students and also MSc postgraduates pursuing the surgical elimination involving lower third molar tooth.

Subjects and techniques

A total of seventeen trainees and MSc postgraduates were assessed when surgically taking away lower third molar teeth under general anaesthesia. The particular teeth had been preferred on the basis that their removal might necessitate elevating of the flap and removal of bone. Assessors were staff members of the department. One particular assessor was scrubbed, aiding as well as, wherever necessary, teaching the operator; the second observed the process closely. Wherever important, the assessor/trainer advised and/or took control of the procedure in the normal way.

Operators had been shown the actual evaluation forms before the surgery. These folks were instructed how the evaluation wouldn't count in any respect towards their own continuous evaluation.

Strategies of evaluation were:

1.An objective assessment of whether 20 different parts of the procedure were effectively as well as incorrectly done. In cases where the particular trainer fixed the actual operative technique or took over, the appropriate areas of the process had been judged inaccurately performed.

2.An operative world wide rating scale (1-5). The particular scale is usually anchored by descriptors and measures different facets of overall performance, i.e. respect for tissue, time in addition to motion, device handling, knowledge of tools, flow involving operation, usage of helpers, understanding of method, general performance.

Each kinds of analysis were designated through the two assessors during or even immediately postoperatively. The operator was instructed to determine his performance using the same evaluation form immediately postoperatively. The results had been linked making use of normal statistical tactics.


As many as twenty two lower 3rd molar teeth were removed by 17 different operators. There had been 8 different assessors utilizing both the objective checklist in addition to worldwide rating scales. Inside eighteen instances, operators examined their particular overall performance utilizing both scales.

There wasn't any proof of a big difference between the particular marks of these two assessors. Employing a two-way investigation involving variance P = 0.70 and P = 0.68 intended for the particular objective as well as international rating scales, correspondingly. The level of agreement between assessors had been 86.36% (kappa = 0.79, P <0.001) inside the objective checklist scale as well as 90.91% (kappa = 0.83, P<0.001) in the international rating scale.

Two-way examination regarding variance shows that there was clearly evidence of a big difference between assessors' and self-assessment marks using both kinds of scores (objective checklist score, P < 0.001; global rating score, P < 0.001).


Even though there had been proof of excellent agreement in between assessors, there was bad agreement amongst assessors as well as operators when using both the objective checklist along with global rating scales. Operators just about usually scored themselves greater than the actual assessors. A few of these variances had been substantial and some operators who had been scored surprisingly low by assessors scored themselves extremely high. Within the objective scale scores were up to 10.5 marks greater (maximum 20) than others of the assessors. They were up to 12.5 marks greater (maximum 40) inside the international scale.

These kind of results claim that some operators have got poor thinking and over-rate their surgical capacity even if evaluated for any particular method as well as offered inflexible standards against which to mark.

Little work happens to be executed upon self-assessment associated with certain clinical methods, specially when marking the self-assessment as soon as the process concerned had been executed. There've, nevertheless, recently been reports associated with relatively inadequate agreement in between outside actions of medical students' clinical performance and also students' self-assessment with their functionality. Additionally, lower performing healthcare students tended to rate their particular clinical performances higher than did their peers at preliminary self-assessment.

In the present review, objective checklist standing even though having very firm standards somewhat overscored greater than the international rating scale in which operators were possibly hesitant to give themselves marks at the extremes of the scale. Definitely over-scoring of checklist standards shows that possibly operators were not sure just what had been expected of them or perhaps in some cases showed a big level of self-deception. Otherwise, they may have scored possible or perhaps ideal overall performance or even tried to make amends for poor performance as a defence mechanism.

Results according to Behnam Aghabeigi

The outcomes of this research project located proof of a surprising and also worrying over-rating of their own surgery competencies by a lot of students as well as postgraduates in oral and maxillofacial surgery. There might be little question that there's a need to analyze additionally the precision of self-assessment of operative skills. Along with this, we have to train surgeons to judge severely their own performance as well as self-assessment can build a great cause for optimistic suggestions among trainer as well as trainee.

It could be discovered that a number of people will never get the reasoning to assess precisely their performance. It may be priceless to experience a approach to discover these people so they really could be redirected at an early stage within their careers.

For more information about Behnam Aghabeigi visit here : http://www.biomedexperts.com/Profile.bme/10677/Behnam_Aghabeigi

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Monday, 6 May 2013

Effect of orthognathic surgery on the temporomandibular joint in patients with anterior open bite

As outlined by Behnam Aghabeigi a retrospective survey of 83 individuals having an anterior open bite that underwent orthognathic medical procedures had been accomplished. Data were checked out for the incidence regarding unnatural TMJ warning signs, including pain. A survey had been mailed to these kinds of individuals that included: (1) the TMJ Scale, (2) the Symptom Checklist 90 (SCL90), (3) the Spielberger State-Trait Anxiety Inventory (STAI), and (4) a graphic analog scale upon which patients indicated their own degree of satisfaction together with the process. Thirty-seven (42%) patients replied to the questionnaire, and also 13 (15%) furthermore attended a clinical and radiographic assessment.

Many regression examination was adopted with regard to statistical evaluation of the actual aspects leading to the actual presence and/or persistence of discomfort. In the preoperative group, the prevalence regarding discomfort was 32%, malfunction 40%, and limitation regarding opening 7%. Age and also sex were drastically associated with the existence of discomfort. The general incidence of abnormal TMJ signs or symptoms had not been appreciably different after orthognathic surgical procedure. An abnormal psychologic profile seemed to be the main aspect associated with the existence and/or persistence associated with discomfort. It truly is concluded that the prevalence of temporomandibular conditions in anterior open bite patients improves with each passing year, is substantially higher in ladies, and is not affected by additional occlusal specifics. In addition, orthognathic surgical procedures would not significantly effect temporomandibular issues in patients together with anterior open bite. Women patients, particularly those through an unnatural psychologic profile, tend to be at high risk of consistent

Behnam Aghabeigi told us it is commonly predetermined the etiology of temporomandibular ailments (TMD) is multifactorial. Different psychological along with mechanical factors happen to be suggested as a factor. There has been argument whether peripheral factors, for instance occlusal disharmony, are of principal value or if key factors, such as psycho-logic specifics, play the crucial role. Depending on the unique ideas of etiology, distinct therapy regimens happen to be endorsed. The dental industry typically has desired the peripheral variables and consequently incorporated treatment modalities aimed at modification of occlusal discrepancies. A number of experts actually advocated orthognathic surgical procedure regarding instances of TMD in conjunction with dysgnathia. Nevertheless, it's unclear whether any kind of association occurs regarding the maxillomandibular relationship and also TMD.Certain kinds of malocclusion are actually reported as much more apt to be linked to TMD5,6 and as a consequence many of these patients are more prone to take advantage of treatment methods addressing the particular occlusal disharmony. Nevertheless, to date there isn't any randomized controlled possible study showing the effectiveness associated with occlusal treatment inside the administration of TMD. Section of the trouble within epidemiologic studies and also clinical trials in connection with people along with TMD would be the heterogenous makeup of the patients with respect to etiologic aspects, such as occlusal or even psychometric issues.

Pullinger and Seligman compared the function of occlusal issues between a big number of TMD patients and control subjects. They found out that, apart from anterior open bite (AOB), overbite along with overjet attributes did not differentiate the particular TMD patient group. Anterior open bite has been unusual amongst control subjects, and the authors noted the total deficiency of AOB in the asymptomatic non-patients, as did numerous other experts. Nevertheless, the low likelihood regarding AOB inside the general human population might lead to sampling errors in these studies; this precipitates a desire to check the incidence associated with TMD in AOB clients.

In addition, the effect associated with orthognathic surgical procedures about the temporomandibular joint (TMJ) has pulled in a whole lot of curiosity. Indications of TMJ conditions before and after orthognathic medical procedures are already written about in various clinical tests, though the claimed occurrence differs widely. You can find studies of varied degrees of development, as well as damage, or simply no change whatsoever, within TMJ signs or symptoms soon after orthognathic surgery. It's been proposed that orthognathic surgical procedures might encourage the actual progress regarding joint disease by microbleeding within the higher combined space, enhanced filling, disc displacement, and immobilization.

It has been advised that this condyles of sufferers with anterior open bite is quite responsive to functional loading, and also their versatile capacity is probably lower than in individuals along with deep bites. Nonetheless,a good research into the details released in connection to combined patient organizations shows that in terms of correction of AOB, the released literature is contradictory. You can find reviews of significant development within TMD17 as well as studies involving progression of a substantial quantity of brand new TMD cases immediately after orthognathic surgery. Therefore, this study has been carried out to measure the effect regarding orthognathic surgery for the TMJ in the reasonably multitude of individuals with AOB.

For more information about Behnam Aghabeigi visit here : http://benaghabeigi.com

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