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An evaluation of soft-tissue profile using esthetic plane, AP line, and profile determinant plane
Reviews and abstracts
417
The period of retention following rotation of the teeth varied for each animal. Gi:ngival injections of collagenase enzyme were made with a hypodermic syringe into the periodontal ligament and supra-alveolar tissue of each dog prior to the discontinuance of retention. All tooth positions-original, after rotation, and after relapse-were recorded in casts made from alginate impressions. Tooth angulations were read from tracings made from similarly oriented radiographs of the casts. Per cent of relapse was less in experimental teeth than in control teeth in three of four dogs. In one dog, the per cent of relapse was less in the control tooth. No local or systemic antigenie responses to the injections were noted. Histologic sections of the periodontium of the experimental and control teeth yielded inconclusive findings. 1199 3rd St. s. Naples,
Fla.
33940
An Evaluation AP line, and
of Soft-Tissue Profile Using Profile Determinant Plane
Stanley P. Werner, D.D.S., M.S. University of l’mnessee College of Dentistry,
Esthetic
Plane,
Memphis, l’tmn.
The purposes of this investigation were (1) to determine whether there is a significant quantitative change in the soft-tissue profile during the retention phase of treatment and (2) to discover whether a statistical correlation exists between the relationship of the lower incisor to the AP line and the lip balance, as determined by Ricketts’ “esthetic plane.” Tracings made from pretreatment, posttreatment, and postretention cephalometric, roentgenograms of thirty female patients with Class II, Division 1 malocclusion treated by the Begg technique were studied. Horizontal linear measurements were made perpendicularly from eleven soft-tissue reference points to the profile determinant plane. Vertical linear measurements of the total profile, nasion to menton, and its three component parts (nasal height, lip height, and chin height) were made. The vertical changes which occurred were determined both as actual measurements and as percentages of the total profile. Coefficients of correlation and determination of the lower incisor to AP line, with the position of the upper and lower lips relative to Ricketts’ “esthetic plane,” before and after treatment, were calculated. The patients studied in this investigation showed significant horizontal changes in the soft-tissue profile, other than those due to the influence of growth, during treatment and during retention. The vertical changes were less evident and not statistically significant during retention. The mandibular incisor position relative to the AP line seemed to be crit-
418
Amer.
J. Orthodont. April 1970
lip balance as such balance is determined
by means
and abstracts
Reviews
ical in achieving proper of the esthetic plane. 5050 Pqndar Ave. Memphis, l’enn.
Use of a Personality Rating Noncooperative Orthodontic Mike
H. Burns,
University
D.D.S.,
Scale in Identifying Patients
Cooperative
and
MS.
of Tennessee College of Dentistry, Memphis, Tenn.
The purpose of this investigation was to search for a possible relationship between the patient’s personality profile, as measured by the Personality Rating Scale of S. Mary Amatora, and his degree of cooperation during orthodontic treatment. The control group consisted of twenty-five patients rated as excellent cooperators by the graduate orthodontic students treating them; the sample group consisted of twenty-five patients rated as poor cooperators. Schoolteachers of the patients in both groups rated each subject according to the Personality Rating Scale. Twenty traits on the scale were tested and statistically evaluated to determine the differences between the two groups under study. The mean score for the cooperative group was higher for each trait than that for the noncooperative group. Sixteen of the twenty traits were significantly different. The four traits not signif?cantly different were intelligence, nervousness-calmness, boisterousness-quietness, and sense of humor. The patients rated as excellent cooperators by the graduate students were also the pupils rated by their teachers as significantly higher in cooperation. On the basis of this study, there appears to be a definite relationship between how a person, as a student, reacts to his teacher in a school environment and how the same person, as a patient, reacts to his orthodontist during treatment. The orthodontic patient’s cooperativeness or noncooperativeness during treatment is not related to the treatment but appears to be a manifestation of his basic personality. .%4Baldwin Ave. Jersey City, N. J. 07304
Reimplantation
of Teeth
J. J. Messing
D. Practitioner
18: 141-2748, Maroh, 1968
The criterion of a successful reimplantation is fixation of the tooth in its socket without residual inflammation. This may be achieved either by ankylosis
417
The period of retention following rotation of the teeth varied for each animal. Gi:ngival injections of collagenase enzyme were made with a hypodermic syringe into the periodontal ligament and supra-alveolar tissue of each dog prior to the discontinuance of retention. All tooth positions-original, after rotation, and after relapse-were recorded in casts made from alginate impressions. Tooth angulations were read from tracings made from similarly oriented radiographs of the casts. Per cent of relapse was less in experimental teeth than in control teeth in three of four dogs. In one dog, the per cent of relapse was less in the control tooth. No local or systemic antigenie responses to the injections were noted. Histologic sections of the periodontium of the experimental and control teeth yielded inconclusive findings. 1199 3rd St. s. Naples,
Fla.
33940
An Evaluation AP line, and
of Soft-Tissue Profile Using Profile Determinant Plane
Stanley P. Werner, D.D.S., M.S. University of l’mnessee College of Dentistry,
Esthetic
Plane,
Memphis, l’tmn.
The purposes of this investigation were (1) to determine whether there is a significant quantitative change in the soft-tissue profile during the retention phase of treatment and (2) to discover whether a statistical correlation exists between the relationship of the lower incisor to the AP line and the lip balance, as determined by Ricketts’ “esthetic plane.” Tracings made from pretreatment, posttreatment, and postretention cephalometric, roentgenograms of thirty female patients with Class II, Division 1 malocclusion treated by the Begg technique were studied. Horizontal linear measurements were made perpendicularly from eleven soft-tissue reference points to the profile determinant plane. Vertical linear measurements of the total profile, nasion to menton, and its three component parts (nasal height, lip height, and chin height) were made. The vertical changes which occurred were determined both as actual measurements and as percentages of the total profile. Coefficients of correlation and determination of the lower incisor to AP line, with the position of the upper and lower lips relative to Ricketts’ “esthetic plane,” before and after treatment, were calculated. The patients studied in this investigation showed significant horizontal changes in the soft-tissue profile, other than those due to the influence of growth, during treatment and during retention. The vertical changes were less evident and not statistically significant during retention. The mandibular incisor position relative to the AP line seemed to be crit-
418
Amer.
J. Orthodont. April 1970
lip balance as such balance is determined
by means
and abstracts
Reviews
ical in achieving proper of the esthetic plane. 5050 Pqndar Ave. Memphis, l’enn.
Use of a Personality Rating Noncooperative Orthodontic Mike
H. Burns,
University
D.D.S.,
Scale in Identifying Patients
Cooperative
and
MS.
of Tennessee College of Dentistry, Memphis, Tenn.
The purpose of this investigation was to search for a possible relationship between the patient’s personality profile, as measured by the Personality Rating Scale of S. Mary Amatora, and his degree of cooperation during orthodontic treatment. The control group consisted of twenty-five patients rated as excellent cooperators by the graduate orthodontic students treating them; the sample group consisted of twenty-five patients rated as poor cooperators. Schoolteachers of the patients in both groups rated each subject according to the Personality Rating Scale. Twenty traits on the scale were tested and statistically evaluated to determine the differences between the two groups under study. The mean score for the cooperative group was higher for each trait than that for the noncooperative group. Sixteen of the twenty traits were significantly different. The four traits not signif?cantly different were intelligence, nervousness-calmness, boisterousness-quietness, and sense of humor. The patients rated as excellent cooperators by the graduate students were also the pupils rated by their teachers as significantly higher in cooperation. On the basis of this study, there appears to be a definite relationship between how a person, as a student, reacts to his teacher in a school environment and how the same person, as a patient, reacts to his orthodontist during treatment. The orthodontic patient’s cooperativeness or noncooperativeness during treatment is not related to the treatment but appears to be a manifestation of his basic personality. .%4Baldwin Ave. Jersey City, N. J. 07304
Reimplantation
of Teeth
J. J. Messing
D. Practitioner
18: 141-2748, Maroh, 1968
The criterion of a successful reimplantation is fixation of the tooth in its socket without residual inflammation. This may be achieved either by ankylosis