Secretory function of the contralateral parotid glands

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Background. The study was a reaction to an article about the “physiological asymmetry” of the salivary glands in right-handed and left-handed people.

Aim. To determine the impact of the side of the study on the function of the parotid glands as a possible factor that must be taken into account when evaluating the results of sialometry.

Material and methods. In 22 patients with xerostomia, controlled dynamic sialometry was performed in two stages. The second stage was a week after the first one. At the first stage, Lashley's capsule was on the right, the catheter was on the left, at the second stage, the catheter was on the right, the capsule was on the left. Sialometry was performed in the morning, 20 minutes after taking 8 drops of a 1% aqueous solution of pilocarpine, for 20 minutes. The results with the Lashley capsule outside the duct were considered control, the results with the catheter in the duct were controlled. This eliminated the technological measurement error. The significance of differences in sialometry parameters was assessed using statistical analysis with Student's t-test. The results were considered significant at p ≤0.05.

Results. In the sample with use of the Lashley's capsule, higher sialometry values on the right were found in 7 out of 22 cases (31.8%), on the left — in 13 out of 22 cases (59.1%) (p >0.05). In the group with the use of a catheter, in 15 out of 22 cases (68.2%) and in 5 out of 22 cases (22.7%), respectively (t=3.4028; p <0.001). In a single sample (capsules and catheter), in 22 out of 44 cases (50.0%) and in 18 out of 44 cases (40.9%), respectively (p >0.05). The results of comparing the average values on the right, obtained in 22 cases with a capsule (1.2±0.6 ml), with those on the left (1.3±0.7 ml) showed no significant difference (t=0.5254). Differences in catheter sialometry (1.0±0.7 ml on the right and 0.8±0.7 ml on the left) were also not significant (p >0.05).

Conclusion. The secretory function of the contralateral parotid glands under comparable individual conditions is the same. Objectively determined functional symmetry simplifies the analysis of the salivary glands secretory function study results.

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About the authors

Alexander V. Shchipskiy

Moscow State University of Medicine and Dentistry named after A.I. Yevdokimow

Author for correspondence.
ORCID iD: 0000-0002-2851-0171

M.D., D. Sci. (Med.), Prof., Depart. of Maxillofacial Surgery and Traumatology

Russian Federation, Moscow, Russia

Marina M. Kalimatova

Moscow State University of Medicine and Dentistry named after A.I. Yevdokimow

ORCID iD: 0000-0002-0935-8936

PhD Stud., Depart. of Maxillofacial Surgery and Traumatology

Russian Federation, Moscow, Russia

Pavel N. Mukhin

Moscow State University of Medicine and Dentistry named after A.I. Yevdokimow

ORCID iD: 0000-0002-8311-5529

M.D., Cand. Sci. (Med.), Assistant, Depart. of Maxillofacial Surgery and Traumatology

Russian Federation, Moscow, Russia


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Supplementary files

Supplementary Files
1. Рис. 1. Набор инструментария для контролируемой динамической сиалометрии; КЛ — капсула Лешли для забора слюны из околоушного протока; КА — катетер анестезиологический для забора слюны из околоушного протока; ПСГ — пробирки стеклянные градуированные для сбора слюны из капсулы и катетера; ПС — пинцет стоматологический; Н — ножницы; З — зажим для сжатия трубки капсулы Лешли после создания вакуума во внешнем фиксирующем контуре; Ш — шприц для удаления воздуха из внешнего контура капсулы Лешли и создания вакуума; Р — рамка для подсчёта количества малых слюнных желёз; ЗБ — зонд для бужирования устья околоушного протока

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2. Рис. 2. Контролируемая динамическая сиалометрия: капсула Лешли справа, катетер слева. Через неделю — наоборот катетер справа, капсула Лешли слева

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